His new book, Inside the Box, grew partly from his own struggle to turn broad interests into focused projects, and the examples he shares—from Mendeleev and General Magic to Pixar and UPS—show how the same principle operates in science, technology, business, and everyday life.

David’s argument is ultimately about more than creativity. It is about how we decide what deserves our attention, how we define problems, how organizations learn, and how we make progress without becoming overwhelmed by the number of directions we could take. The tension running through the episode is simple but consequential: freedom gives us possibilities, while constraints give those possibilities shape.

Why More Freedom Isn’t Always Better

How Too Many Options Can Paralyze Decision-Making

Modern life often equates greater choice with greater opportunity. Yet David points toward a more complicated relationship between abundance and human cognition. When there are too many possible directions, the challenge is no longer generating options but deciding which ones deserve commitment. That problem appears in his own experience as a writer: having accumulated an enormous body of research, he found that the abundance itself made it harder to determine what the book should become.

This is where decision-making and creativity begin to overlap. A mind confronted with endless possibilities can spend its energy evaluating paths rather than exploring one deeply enough to discover something meaningful. Constraints reduce that search space. They make commitment possible, which in turn makes sustained experimentation possible.

Why Constraints Can Channel Creativity

David’s central argument is that constraints can provide the structure within which creativity becomes more productive. His example of Mendeleev captures the idea particularly well: the scientist was not sitting down with unlimited freedom and asking how he might revolutionize chemistry. He was trying to solve a concrete organizational problem under severe limitations of time and space. Those boundaries led him to experiment with groups of elements, notice recurring relationships, and ultimately recognize patterns that extended far beyond the original problem.

David describes this as the difference between overvaluing the freedom of the “dreaming brain” and recognizing the power of constraints to channel productive experimentation. The implication reaches well beyond creativity. A useful constraint does not necessarily diminish what we can do; it can determine where we look long enough to see what we otherwise would have missed.

The Difference Between Freedom and Productive Freedom

David’s own writing process became a case study in this distinction. While working on Inside the Box, he had roughly 100,000 words of notes. Instead of trying to manage that abundance directly, he imposed a severe structural constraint: the entire book had to fit onto a single page.

That one-page outline forced him to prioritize, connect chapters, and experiment with the architecture of the book. More importantly, the constraint changed his psychological relationship with the work. Rather than remaining preoccupied with whether he could reproduce the success of Range, he became absorbed in the experiment itself and lost some of the self-consciousness that had been slowing him down.

Productive freedom, then, is not the absence of boundaries. It is having enough room to explore inside boundaries that make exploration meaningful.

Efficacy is your present-tense belief in your ability to execute a task. Coined extensively by Albert Bandura, self-efficacy is the conviction that you possess the skills, capacity, and agency to act in the immediate moment. Without efficacy, you never start. You remain frozen by perceived inadequacy.

The Surprising Truth About How Breakthroughs Happen

What Mendeleev’s Periodic Table Really Teaches Us

The popular version of Mendeleev’s story suggests that the periodic table arrived as a sudden insight, even appearing to him in a dream. David offers a much more grounded account. Mendeleev had a publishing contract for a two-volume introductory chemistry textbook and had covered only eight of the 63 known elements in the first volume. He needed to organize the remaining 55 elements despite limited space and time.

That practical problem led him to experiment with grouping elements according to shared characteristics. As he searched for families and recurring patterns, he began to see relationships that allowed him to predict properties and even anticipate elements that had not yet been discovered.

The lesson is not that constraints magically produce genius. It is that a sufficiently concrete problem can direct attention toward relationships that remain difficult to see when the problem is defined too broadly.

Why Big Breakthroughs Often Start With Small Problems

Many ambitions become harder to act on precisely because they are too large to engage with directly. David and John return repeatedly to the value of beginning with a smaller problem that can be defined, tested, and understood.

That principle also appears in the discussion of General Magic and in John’s reflections on large technology projects. Starting with a narrower problem creates an opportunity to learn before the cost of being wrong becomes enormous. A small solution can become the “keyhole” through which a much larger possibility eventually becomes visible.

Stop Searching for the Horizon

The conversation takes a more personal turn when David connects the logic of constraints to the experience of always looking ahead. John describes the tendency to search for the horizon—to imagine that the meaningful version of life or work is somewhere beyond the present moment.

David connects this to Sherry Turkle’s description of being “forever elsewhere.” We can be physically present while mentally inhabiting another possibility, another destination, another version of our lives. His observation is that we rarely develop ways to “live where our feet are” in the present moment.

That idea gives the broader argument about constraints an unexpectedly human dimension. Sometimes the relevant constraint is simply reality itself: the project we actually have, the people actually in front of us, and the circumstances in which we are living now.

In this episode, you’ll learn

• How constraints can focus creativity and turn overwhelming possibilities into productive experimentation.
• Why Mendeleev’s periodic table emerged from the practical constraints of organizing a chemistry textbook.
• What General Magic reveals about the dangers of abundant talent, money, freedom, and an undefined customer problem.
• Why Pixar keeps creative teams small and experiments contained before committing enormous resources to production.
• How the UPS routing story demonstrates that technological innovation can depend as much on human learning and trust as on the technology itself.
• How David protects his attention through monotasking, time-batching, and a simple end-of-day practice inspired by Ernest Hemingway.

How General Magic, Small Experiments, and Human Trust Shape Innovation

When Too Much Talent and Money Become a Problem

General Magic provides one of the clearest examples in the conversation of how abundant resources can sometimes make innovation harder rather than easier. The company brought together extraordinary talent, substantial funding, and an audacious technological vision. Its founders were imagining products that anticipated aspects of the modern smartphone long before the web existed. Yet the very abundance that made such ambition possible also made it difficult to decide what the organization should actually build.

David describes the company as a story about the danger of too much freedom and the absence of constraints. Without a clearly defined customer problem, the team could continue adding possibilities, features, and complexity. The result was a project with enormous potential but insufficient focus. The lesson is subtle: resources can remove practical limitations, but they cannot tell an organization where to direct its effort. When everything is possible, deciding what matters becomes its own problem.

Why Small Problems Create Better Conditions for Innovation

The contrast becomes clearer through the people who left General Magic and focused on specific customer needs. Jeff Hawkins recognized a straightforward problem for busy professionals: they wanted to carry their contacts, calendars, and notes with them. Instead of attempting to build everything General Magic envisioned, he concentrated on that narrower use case, creating the Palm Pilot. David emphasizes that defining a customer problem made such a difference because it channeled and focused the work.

This is where the idea of starting small becomes more than a project-management technique. A smaller problem gives a team something concrete to learn from. John connects this lesson to his own experience with large technology initiatives, where agile development made it possible to test ideas closer to the customer and discard an approach after months of work rather than years.

The same principle explains David’s “think slow, act fast” approach. The slow part belongs at the beginning, when a team defines the boundaries and decides which smaller problem it can meaningfully investigate. Once those decisions are clear, execution can become faster because fundamental questions have been addressed before complexity takes over. Small experiments also make failure informative rather than catastrophic: they allow teams to learn while changing direction is still relatively inexpensive.

How Pixar Uses Constraints to Improve Creativity—and Why UPS Needed Trust

Pixar illustrates how deliberately limiting the scale of an effort can protect creativity. David explains that the studio keeps directors in story development with tiny teams for years, refining the core of a story before moving into the much more expensive and complicated production phase. Pixar also uses short films as contained experiments with new animation techniques, creating a small environment in which an idea can succeed, fail, or teach the team something useful without carrying the cost of a full feature film.

The logic extends naturally into the Theory of Constraints. Rather than trying to make every part of a process faster, David argues for identifying where work is actually accumulating. If one stage is limiting the entire system, optimizing everything around it can simply send more work toward the same blockage. The more useful question becomes: where is the system constrained, and what would happen if we addressed that constraint first?

UPS reveals another dimension of the same principle: innovation has to fit the human system in which it operates. David describes how drivers initially rejected the company’s routing algorithm because some recommendations conflicted with their local knowledge and seemed irrational from the driver’s perspective. UPS eventually brought drivers into the process, allowing them to interact with the system and experiment with how it produced routes.

John describes this as turning a black box into a glass box. The drivers did not need to understand every technical detail; they needed enough understanding to see the system’s logic and develop trust in it. One especially revealing experiment allowed a veteran driver to compete against the algorithm, turning the technology from something imposed upon him into something he could test and learn from.

This becomes increasingly relevant as organizations introduce AI into established workflows. David’s observation is that the larger the technological change, the more important it becomes to connect the new system to something familiar. Adoption depends on helping people understand not only what is changing, but also what remains continuous—their expertise, judgment, workflow, and sense of agency.

The One-Page Experiment Behind David Epstein’s New Book

Inside the Box: How Constraints Make Us Better was not simply an abstract investigation into constraints. David explains that the book emerged partly from a problem he had experienced himself after Range: he had broad interests, a large collection of experiences, and plenty of ideas, but struggled to draw boundaries around a project and actually begin.

That makes the story behind the book particularly fitting. While writing it, David took approximately 100,000 words of notes and forced himself to reduce the entire architecture of the book to one page. He described the page as bubbles and arrows packed together as tightly as possible. The restriction forced him to decide what belonged, what connected, and what could be left out.

The experiment also changed the emotional experience of writing. Instead of asking whether he could make another book as successful as Range, he became absorbed in the structural problem in front of him. The constraint gave him something concrete to investigate, and that made the work feel less like an attempt to reproduce a previous achievement and more like an experiment worth pursuing.

In that sense, Inside the Box contains its own argument. David did not merely research the power of constraints; he used one to get himself unstuck.

How to Protect Your Attention in a Distracted World

Why Multitasking Doesn’t Actually Work

The attention discussion brings the episode’s argument back to individual behavior. David describes the difficulty of constantly switching between tasks and the way that fragmented attention makes it harder to return to demanding work at the depth he wants.

Rather than attempting to respond to every demand as it arrives, he deliberately structures his work around periods in which he focuses on one type of activity.

The Hidden Cost of Constant Task Switching

David describes email as a useful example. If someone checks and responds to email dozens of times throughout the day, those interruptions create many small blocks of attention rather than a concentrated period in which the task can be completed.

His response has been to batch activities such as email into defined periods and then move into blocks devoted to other forms of work. The purpose is not simply efficiency. It is to preserve the cognitive conditions required for deeper thinking.

How to Structure Your Day for Deep Focus

The approach David describes is essentially a constraint applied to attention. By deciding in advance what kind of work belongs in a particular block, he reduces the number of decisions competing for attention in real time.

That principle mirrors the larger argument of the episode. Focus is easier when we deliberately narrow the field. A structured day does not eliminate freedom; it protects the freedom to concentrate.

The Hemingway Principle for Tomorrow’s Priorities

At the end of each workday, David writes down the important thing he intends to begin the following day. He calls this the Hemingway principle, inspired by Ernest Hemingway’s practice of stopping while he knew where the work would continue.

For David, this also protects against the “mere urgency effect”: the tendency to prioritize tasks that feel immediately pressing over work that may be substantially more important.

How to Conduct Your Own Theory of Constraints Audit

The ideas in this episode can be translated into a practical examination of almost any project or workflow.

Make Every Step Visible

Start by mapping the process rather than relying on assumptions about where the problem lies. Write down the actual sequence of steps, decisions, handoffs, approvals, and dependencies. Visibility makes it possible to see the system as it exists rather than the way it is supposed to work.

Find Where the Work Is Piling Up

Look for the point where unfinished work accumulates, where people repeatedly wait, or where decisions consistently slow progress. That location may be the real constraint.

Stop Optimizing Everything Except the Bottleneck

Once the constraint is visible, resist the instinct to improve every part of the system simultaneously. If the bottleneck remains unchanged, increasing capacity elsewhere can simply push more work toward it.

Ask What Smaller Problem You Can Solve First

Finally, reduce the scale of the problem until meaningful experimentation becomes possible. A smaller problem can reveal information about the larger one while keeping the cost of being wrong manageable.

That sequence captures much of what David explores throughout the episode: define the problem, narrow the field, experiment, learn, and only then expand.

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About Today’s Guest, David Epstein

David Epstein is a New York Times bestselling author whose work examines how people develop expertise, adapt to uncertainty, and solve difficult problems. He is the author of The Sports Gene and Range, which explored how broad experiences and interdisciplinary learning can prepare people for an unpredictable world. His latest book, Inside the Box: How Constraints Make Us Better, turns toward the complementary question of how people can channel that range and curiosity into focused action and meaningful progress.

In this episode of Passion Struck, he draws on examples from science, technology, business, creativity, and his own writing process to examine the surprising ways constraints can improve experimentation, decision-making, innovation, and attention.

When You Narrow the Problem, Your Ideas Get BIGGER | David Epstein

Learn More and Connect

👉 All episode links, my books You Matter, Luma, and The Mattering Effect, The Ignited Life newsletter, and the Start Mattering store are here: linktr.ee/John_R_Miles

FAQ (Frequently Asked Questions)

How do constraints improve creativity?

Constraints can give creativity a direction in which to operate. By reducing an overwhelming number of possible paths, they can make experimentation more focused and help people discover solutions they might not encounter through unrestricted exploration. David’s Mendeleev example illustrates how a practical limitation led to a much larger scientific insight.

What is the power of constraints?

The power of constraints comes from their ability to focus attention and create conditions for productive experimentation. Rather than treating limits solely as obstacles, David argues that meaningful boundaries can help people define smaller problems, test ideas, and discover larger possibilities through the process.

Can too many choices make decision-making harder?

Yes. An abundance of options can create a larger decision space without necessarily making the resulting decision better. David connects this problem to the broader issue of attention: when our mental resources are constantly divided among competing possibilities, it becomes harder to commit deeply to any one direction.

What can Mendeleev teach us about creativity?

Mendeleev’s story suggests that major breakthroughs can emerge from ordinary problems. He was trying to organize a chemistry textbook under constraints of time and space when his experimentation with groups of elements revealed recurring patterns. He was solving a much smaller problem than the breakthrough for which he became famous.

Why did General Magic fail?

David presents General Magic as an example of what can happen when exceptional talent and resources exist without sufficiently strong constraints. The company pursued an extraordinarily broad vision and accumulated complexity, while other individuals who identified specific customer problems were able to build much more focused products.

How does Pixar use constraints to improve creativity?

Pixar keeps directors and small teams in story development for extended periods, allowing them to refine the core of a story before the expense and complexity of full production begin. The studio also uses short films as relatively contained experiments with new animation techniques.

What did UPS learn about technology and change management?

UPS discovered that creating an effective routing algorithm was only part of the challenge. Drivers needed to understand and trust the system and integrate it with their existing knowledge and workflows. The company eventually brought drivers into the learning process and made the algorithm’s behavior more understandable and interactive.

How can I protect my attention?

David describes batching activities such as email, monotasking during focused periods, taking breaks between blocks, and deciding the important task he will begin the following day. These practices reduce constant task switching and make attention more deliberate rather than reactive.

Why is asking the right question important for innovation?

Because a sophisticated solution to the wrong problem can still produce failure, David’s UPS discussion illustrates this clearly: the organization initially appeared to be solving a routing problem, but an important part of the challenge turned out to be a learning and adoption problem.

In his landmark book, Agency: The Psychological History of Human Progress, Seligman synthesizes sixty years of behavioral research to show that agency in psychology consists of three vital capacities: efficacy, optimism, and imagination. Together, these three faculties govern whether we believe we can act, whether we expect our actions to yield results, and whether we can envision better alternatives to our present reality.

When you understand what agency in psychology is, you stop viewing your life as a passive reaction to external circumstances. In this conversation on Passion Struck, Seligman unpacks how human agency built civilization, why agency and mattering are deeply reciprocal, and how to develop a strong sense of agency to change your future.

What Is Agency in Psychology? Martin Seligman’s Perspective

For much of his career, Martin Seligman was associated with one of psychology’s most important discoveries: learned helplessness. His early research examined what happens when people repeatedly experience situations in which their actions seem unable to change the outcome. Over time, the expectation of powerlessness can become generalized. A person stops trying, even when circumstances eventually change and opportunities for action become available.

Looking back across six decades, however, Seligman sees a deeper continuity in his work. He realized that he had spent much of his career studying the absence of something rather than the thing itself. What appeared to be a story about helplessness, pessimism, and hopelessness was also a story about mastery, optimism, and human agency.

That realization became central to his latest work. Agency, in Seligman’s framework, is not simply confidence, motivation, or willpower. It is the psychological capacity to act on the world with some expectation that your actions can make a difference. It connects what you believe you can do now with what you believe might become possible in the future.

This is also where Seligman’s work on positive psychology becomes especially relevant. Rather than concentrating exclusively on diagnosing and correcting what goes wrong, positive psychology asks what allows people to develop their strengths and build lives characterized by flourishing. Agency provides a bridge between those two perspectives because it asks how people move from understanding themselves to actually changing the conditions in which they live.

The Three Components of Agency: Efficacy, Optimism, and Imagination

Seligman’s model breaks human agency into a three-part psychological framework. If any one of these pillars is missing, personal agency breaks down.

1. Efficacy: The Belief in “I Can”

Efficacy is your present-tense belief in your ability to execute a task. Coined extensively by Albert Bandura, self-efficacy is the conviction that you possess the skills, capacity, and agency to act in the immediate moment. Without efficacy, you never start. You remain frozen by perceived inadequacy.

2. Optimism: The Belief That Effort Pays Off

While efficacy addresses the present, optimism addresses the future. Optimism is the psychological expectation that good outcomes are likely and that your personal efforts will produce positive results over time. When faced with obstacles, an optimistic explanatory style prevents you from interpreting failure as permanent or pervasive, providing the stamina required to sustain agency.

3. Imagination: Seeing What Does Not Yet Exist

Imagination is the creative frontier of agency in psychology. It is the ability to project yourself forward and generate plausible alternative realities. Without imagination, efficacy and optimism have no target. You can be highly disciplined, but without an imagined future, your agency remains trapped in current routines.

In this episode, you’ll learn

• What is agency in psychology? And why Martin Seligman sees it as the culmination of his six decades of work.
• How efficacy, optimism, and imagination work together to create human agency and turn possibility into action.
• Why learned helplessness helped Seligman understand the psychology of mastery, flourishing, and the belief that our actions can matter.
• How agency connects with mattering, relationships, individual and collective progress, and the development of human flourishing.
• How AI is changing Seligman’s ability to test ideas, conduct research, collaborate creatively, and expand his own agency.
• Why the future of education and parenting may depend less on making children smarter and more on developing character, resilience, cooperation, and well-being.

What the History of Human Progress Reveals About Agency

Seligman’s latest book extends the idea of agency far beyond individual psychology and into the history of civilization.

One of the mysteries that captured his attention is the Axial Age, the period roughly between 1000 BCE and 500 BCE when major developments appeared across several civilizations, including the Greeks, Hebrews, Chinese, Persians, and Indians. During this period, philosophy, political thought, technology, cities, literature, and new forms of intellectual life began to develop with remarkable intensity.

Seligman developed a hypothesis about what may have changed: the emergence of language expressing human agency.

He wondered whether earlier cultures had fewer ways of expressing the idea that human beings themselves could act upon the world, while later cultures developed richer concepts corresponding to “I can” and “we can.” With the help of AI systems capable of working across ancient languages, he was able to investigate a question that he says would previously have been almost impossible to test within a human lifetime.

The conclusion he discusses in the interview is provocative: across these cultures, new agentic vocabulary appeared during this period.

Seligman sees language as more than a way of describing a psychological capacity. In his interpretation, the development of new words for human ability may have helped make new forms of human action imaginable.

The larger implication is striking. Civilization may depend partly on what human beings can imagine themselves capable of doing. When people possess language for agency, they can more readily conceive themselves as participants in history rather than simply as recipients of forces beyond their control.

Individual Agency and Collective Agency

The next question is more complicated: Is progress driven primarily by individuals who believe “I can,” or by communities that believe “we can”?

Seligman’s work on Western history has emphasized the growth of individual agency, but his examination of Chinese history led him toward a more nuanced perspective. He argues that Chinese history provides examples in which progress is associated with a balance between individual and collective agency. When individual agency is suppressed too strongly by collective demands, progress can stagnate. When there is room for both individual initiative and collective coordination, different possibilities emerge.

This creates a genuine tension rather than an easy formula.

Collective agency can provide belonging, consolation, cooperation, and social cohesion. Yet Seligman also raises a concern based partly on his decades of experience in academic institutions: groups do not automatically become better problem solvers simply because more people are involved.

His current analysis of modern America is explicitly tentative, and he is investigating an intriguing possibility: the forces that increase accomplishment and productivity may not always be identical to those that increase happiness and well-being. A society organized strongly around individual achievement may produce innovation and economic output while also placing psychological pressure on individuals. Greater collective identification may reduce some forms of distress while potentially limiting individual initiative.

The challenge, then, may not be choosing between “I can” and “we can.” It may be learning how to preserve enough individual agency for people to create, explore, and take responsibility while maintaining enough collective agency for communities to cooperate and care for one another.

Why Martin Seligman’s New Book May Be His Most Personal Yet

There is something fitting about the fact that Seligman’s book on agency emerged after such a long career. When John tells him he has read both an earlier manuscript and a later version, Seligman describes how his thinking changed between them. The newer manuscript placed greater emphasis on collective agency, the relationship between “I can” and “we can,” and the role of contribution and relationships in human progress.

That detail reveals something about how the book itself came together. Seligman was not simply writing a history and applying a psychological theory to it. He was using history to test a question that had followed him throughout his career: What happens when human beings come to believe that their actions can matter?

The book’s central historical mystery eventually led him into an unexpected collaboration with AI. After spending years studying the relationship between Chinese agency and agency in the Hebrew Bible, he asked Claude to help bridge two chapters he could no longer see objectively after years of staring at them. The machine identified a connection between the individual’s relationship to the state in China and the relationship between individual agency and divine agency in the Hebrew tradition.

For Seligman, the episode became almost a miniature demonstration of his argument. Agency expands when we gain new ways to imagine, investigate, and act upon possibilities.

That deeper thread connects his early research on helplessness with his newest book. A psychologist who began by asking whether helplessness could be learned eventually arrived at a much larger question: What allows human beings to believe in their capacity to shape the future?

How AI Is Changing Human Agency

Perhaps the most contemporary part of this conversation is Seligman’s account of how AI has changed his own research process.

He describes using Claude and ChatGPT to test hypotheses, examine large bodies of information, and challenge assumptions that would previously have required enormous amounts of time. In one example, he used AI to investigate claims about siblings, maternal employment, and depression. What once required an extended research project could now be investigated much more quickly.

For Seligman, this is not merely about efficiency. It changes what he can attempt.

He also describes AI as a creative partner. His view of creativity is partly based on the idea that important creative work can emerge through two minds working back and forth, correcting, challenging, and extending one another. He sees his interaction with AI through this lens.

He offers a particularly memorable example from his own book. His editor noticed that the transition between two chapters—one about Chinese agency and another about the Hebrews and the Bible—was missing. Seligman had spent years looking at the material without seeing the connection clearly. He asked Claude to read both chapters and propose a transition. The resulting connection helped him see a relationship he had overlooked.

For Seligman, that experience represents something more consequential than automation. The interaction expanded what he could see and, in turn, expanded his agency as a researcher and writer.

What Should Education Teach When AI Can Be Smarter Than Us?

AI also forces a difficult question about education.

For generations, schools have placed enormous value on knowledge, intelligence, and becoming the smartest person in the room. Seligman points out that this hierarchy is being disrupted. Machines can already process and retrieve far more information than a human being.

If knowledge becomes abundant, the educational question changes.

Seligman believes schools will need to place greater emphasis on character, well-being, leadership, kindness, cooperation, and flourishing. Education can increasingly become less about accumulating information for its own sake and more about developing the human capacities that determine what we do with that information.

This is closely connected to agency. Knowledge gives us possibilities, but character influences how we use them. Imagination can generate futures, but wisdom helps determine which futures are worth pursuing. Intelligence can solve problems, but cooperation determines what people can accomplish together.

The age of AI may therefore require a deeper understanding of what makes human beings valuable rather than simply a more sophisticated version of the education systems we already have.

The Parenting Question: Safety, Achievement, and Resilience

The conversation closes with a similarly difficult question about raising children.

John asks Seligman about the tension between overprotection and pressure to achieve. His answer is unusually honest because he does not pretend there is a simple solution.

Overprotection can keep children safe while limiting their opportunities to develop resilience in the face of uncertainty and difficulty. Pushing children toward achievement can build persistence and competence, but it can also expose them to excessive pressure, failure, and risks that parents understandably want to prevent.

Seligman acknowledges that he and his wife have approached this tension differently. He describes himself as more achievement-oriented and his wife as more protective, and their family life has become a process of compromise.

The larger lesson is that developing agency requires room for children to experience some relationship between effort and consequence. They need opportunities to discover that they can do difficult things, while also having relationships and environments that provide security when those efforts fail.

Agency grows within that tension between protection and exploration.

What Martin Seligman Wants the Next Generation to Believe

The final question John asks brings the conversation back from civilizations and artificial intelligence to something much more intimate.

Seligman has dedicated the book to two of his grandchildren, so John asks what belief about human possibility he hopes they carry into the future.

His answer is a belief in progress.

Seligman points out that his grandchildren reaching childhood already reflects an extraordinary transformation in human conditions. He wants them to participate in continuing that progress, while understanding that progress is larger than technological advancement. It also includes what he describes as spiritual progress.

That distinction gives the conversation its final dimension. Agency is ultimately about more than productivity, achievement, or control. It is about participation. It is about recognizing that our choices enter into relationships with other people, institutions, cultures, and generations.

We cannot determine everything that happens next. Agency begins with something more modest and more consequential: the belief that what we do can influence what happens next.

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About Today’s Guest, Martin Seligman

Martin Seligman is a pioneering psychologist, educator, and author whose work has transformed how we understand resilience, optimism, human flourishing, and the psychology of positive change. A professor at the University of Pennsylvania and director of its Positive Psychology Center, he first gained widespread recognition for his groundbreaking research on learned helplessness, which helped explain how repeated experiences of powerlessness can shape behavior and expectations.

Seligman became one of the leading figures in positive psychology, helping establish a scientific framework for studying what allows individuals and communities to thrive. He has authored more than 30 books and hundreds of scholarly articles, served as president of the American Psychological Association, and developed influential ideas around optimism, character strengths, and well-being.

His latest book, Agency: The Psychological History of Human Progress, brings together six decades of research to explore how efficacy, optimism, and imagination give people the capacity to shape their futures and contribute to human progress.

What Is Human Agency? Martin Seligman Explains the Power of ‘I CAN’

Learn More and Connect

👉 All episode links, my books You Matter, Luma, and The Mattering Effect, The Ignited Life newsletter, and the Start Mattering store are here: linktr.ee/John_R_Miles

FAQ (Frequently Asked Questions)

What is agency in psychology?

Agency in psychology refers to an individual’s conscious capacity to make choices, take action, and exert influence over their thoughts, behaviors, and life trajectory.

What are the three components of agency according to Martin Seligman?

Seligman defines agency through three interrelated capacities: efficacy (believing you can act in the present), optimism (believing your efforts will yield future rewards), and imagination (envisioning new, constructive possibilities).

How does agency differ from self-efficacy?

Self-efficacy is one part of agency—specifically, your belief in your capability to execute a particular task. Agency in psychology is broader, combining efficacy with future-focused optimism and the imaginative capacity to conceive new goals.

What causes people to lose their sense of agency?

People lose their sense of agency when they experience learned helplessness—a state caused by repeated exposure to adverse conditions where their actions produce no meaningful change or feedback.

Can agency be learned and strengthened?

Yes. Agency can be developed through deliberate behavioral design, cognitive reframing, experiencing incremental mastery wins, and learning an optimistic explanatory style.

How does human agency influence societal progress?

Societies progress when cultural norms and institutions encourage citizens to believe their contributions matter. When belief in human agency rises, innovation, political freedom, and social flourishing naturally expand.

The episode begins with an observation about Harry Truman that becomes a useful lens for the entire conversation. When Truman became president following Franklin Roosevelt’s death, historians have argued that roughly 95 other sitting senators could have performed the basic responsibilities of the presidency. That raises an uncomfortable but important question about our own lives. In some circumstances, our contribution is highly distinctive. In others, capable people could occupy our position and produce a similar result. Understanding the difference changes how we should allocate our effort.

John reflects on two weeks spent in Blue Ridge, Georgia, where time on Lake Nottley and hikes through the mountains created a version of himself who felt clearer, slower, and more patient. The experience prompted a deeper question: did the mountains make him a better person, or did they simply remove an environment that had been demanding constant attention and triggering the wrong responses? That question becomes the doorway into the central idea of Situated: human potential is shaped by the interaction between the individual and the situation.

When Grit Meets the Situation

Angela Duckworth helped make grit one of the defining ideas in contemporary conversations about perseverance, yet her newer work in Situated: Find the People and Places That Bring Out Your Best expands the picture considerably. Grit remains valuable, while the environment determines many of the conditions under which persistence can actually translate into progress. This distinction reaches back to the foundational social-psychology work of Lee Ross and Richard Nisbett in The Person and the Situation, which examined the powerful influence circumstances can exert on human behavior.

John explores this distinction through the experience of West Point’s Cadet Basic Training. Over several decades, researchers observed a relationship between grit and the likelihood that cadets would complete training in a given year. Yet completion rates steadily increased across roughly four decades while admissions and physical standards remained intact. Former West Point superintendent General Robert Caslen summarized the institutional lesson for Duckworth in a simple observation: “It’s not the cadets, it’s the culture.”

West Point had gradually shifted from an attrition model designed primarily to identify who could survive to a developmental model designed to help cadets become stronger. The people entering the institution had not suddenly developed extraordinary reservoirs of willpower. The surrounding system had changed so that effort had a greater opportunity to produce the desired outcome. The lesson extends well beyond military training. When sustained effort repeatedly fails to produce progress, examining the structure surrounding that effort can reveal possibilities that another round of self-discipline would leave untouched.

The Environment Can Call Forth a Different You

John then explores the idea of psychological “modes,” drawing on the work of psychologist Aaron Beck. Rather than viewing personality as a completely fixed expression of who we are, this perspective suggests that our minds can move into different reflexive states depending on the circumstances surrounding us. The same person can become defensive and withdrawn in one environment and focused, confident, and capable in another.

This provides a more nuanced way to understand experiences that are often interpreted as personal shortcomings. Sluggishness, cynicism, disengagement, or irritability can sometimes reflect an environment that continually activates an unproductive mode. A setting characterized by hostility and micromanagement can produce a very different response from one that combines meaningful challenge with genuine support.

John’s experience in the mountains becomes a personal example of this principle. The change in environment did not manufacture a new personality. It created conditions in which a different existing capacity could become easier to access. That distinction matters because it changes the question we ask ourselves. Instead of immediately concluding that we need to become a different person, we can examine what our surroundings are repeatedly asking our nervous system, attention, and behavior to become.

The Mattering Market and the Conditions That Shape Our Worth

The conversation takes another dimension when John connects these ideas to his own research for The Mattering Effect. While interviewing Stanford researcher Jamil Zaki, John encountered Zaki’s description of a “marketplace” in which people move through environments such as work, school, and family while implicitly being asked to demonstrate their usefulness before they are treated as though they possess value.

John recognized a striking convergence with the concept he has been developing as the Mattering Market. The connection reveals an important dimension of environmental fit: situations influence more than productivity. They can influence our sense of whether we belong, whether our contributions are recognized, and whether we experience ourselves as consequential to the people and systems around us.

This matters because environments that continually condition belonging on performance can create a cycle of striving that becomes difficult to distinguish from healthy ambition. A person may continue working harder because the environment keeps moving the threshold for feeling valued. Over time, the individual can interpret the resulting exhaustion as evidence of insufficient grit when the deeper issue involves the conditions under which their sense of mattering has been established.

The Fit Check therefore becomes relevant to identity as well as performance. Understanding the room means examining the invisible expectations embedded within it: what does this environment reward, what does it discourage, what version of me does it repeatedly bring forward, and what does it require me to prove before I feel that I matter?

The Hamlet Test: Discovering When the Individual Truly Matters

Jared Diamond approaches the person-versus-situation question from another direction in Profits, Prophets, Coaches and Kings: (When) Do Leaders Matter? His work asks whether particular leaders genuinely changed the course of events or whether circumstances would have produced a similar outcome with another capable person occupying the same position.

Diamond’s Hamlet Test provides a useful counterweight to the environmental argument. The question is whether another person, living at precisely that moment and possessing the same available opportunities, could have produced what the individual produced. The answer varies dramatically depending on the person and circumstance.

Harry Truman provides one example. Diamond argues that many other sitting senators could have assumed the responsibilities of the presidency when Truman did and performed the basic function effectively. Shakespeare provides the opposite case. Elizabethan England contained numerous working dramatists, yet the particular combination of Shakespeare’s experience, opportunities, previous work, theatrical environment, and creative ability produced Hamlet in a way that another contemporary playwright could not simply have replicated.

The distinction creates a more mature understanding of responsibility. Some problems call for a better environment because the individual is working inside conditions that prevent effort from translating into results. Other moments genuinely depend upon the individual. In those moments, changing the environment becomes an incomplete answer because the contribution itself belongs to you.

In this episode, You’ll Learn:

• Why Angela Duckworth’s work on Situated expands the traditional understanding of grit by showing how strongly environments influence whether effort produces results.
• What the West Point Cadet Basic Training experience reveals about the relationship between individual perseverance, institutional culture, and environmental design.
• How psychological “modes” can cause the same person to behave very differently depending on the environment and why certain struggles may reflect environmental fit rather than character.
• How Jamil Zaki’s marketplace of mattering connects with John’s Mattering Market and the environments that condition belonging and worth on demonstrated usefulness.
• How Jared Diamond’s Hamlet Test distinguishes people whose contributions are replaceable from those whose unique presence genuinely changes an outcome.
• How to use the two questions of the Fit Check to determine when to redesign your environment and when to recognize that the work genuinely belongs to you.

The Fit Check: Two Questions for Better Decisions

John brings these ideas together in a practical framework designed to take only a few seconds. The first question examines whether your presence is actually the decisive variable:

If I removed myself entirely from this exact situation, would the outcome basically stay the same?

When the answer is yes, the situation deserves closer examination. The opportunity may lie in redesigning the environment, removing friction, changing a routine, establishing a boundary, or placing yourself somewhere that allows effort to work more effectively.

The second question examines whether the outcome depends upon something uniquely yours:

Is there any version of this where the outcome depends specifically on me, and nobody else could produce it?

When the answer is yes, the situation contains what John calls the Hamlet moment. The responsibility belongs to you. No change in circumstances can substitute for the contribution only you can make.

Together, these questions help distinguish two forms of effort that often become confused. One involves trying to overcome an environment that continually works against the desired outcome. The other involves giving your full attention to an outcome that genuinely depends on you. John argues that much of our exhaustion comes from applying the intensity required by the second situation to problems that belong to the first.

Why Mattering Begins With the Room Around You

The ideas in this episode also point toward a broader question at the center of John’s upcoming book, The Mattering Effect: What happens to a person when the environments around them consistently communicate that their presence has value?

The connection between situated behavior and mattering is significant because people do not experience environments as neutral backdrops. The culture of a workplace, the dynamics of a family, the expectations of a community, and the structure of an institution can all influence whether people feel trusted, useful, visible, and capable of contributing something meaningful.

The West Point example illustrates this at an institutional level. The transformation occurred partly because the environment was redesigned to help people develop. The Mattering Market extends the question into the realm of human worth: what happens when environments are structured around continual proof of usefulness? Together, these ideas suggest that human flourishing depends partly on the conditions through which people encounter challenge, recognition, belonging, and responsibility.

That connection will become increasingly important as John develops the ideas behind The Mattering Effect. Mattering is not simply a feeling we generate internally. It is also shaped through relationships and systems that communicate whether our contributions are seen and whether our presence carries significance. Understanding the room therefore becomes part of understanding the person.

Designing a Life That Brings Out Your Best

The practical implication of the Fit Check is a more deliberate approach to personal responsibility. Instead of treating every obstacle as a test of character, we can become more precise about the relationship between our effort and the conditions surrounding it. A draining evening may call for a different relationship with technology, while a meaningful conversation with a child may call for our undivided presence. A dysfunctional workplace may require environmental change, while a piece of work that carries our unique perspective may require deeper personal commitment.

John applies this distinction to his own life after returning from the mountains. The goal is not to recreate Blue Ridge every evening. The lesson is to identify what made that version of himself easier to access and then redesign ordinary life accordingly. Putting the phone in another room, walking instead of scrolling, or creating screen-free time at dinner can change the conditions without requiring an extraordinary reserve of willpower.

This is where the Fit Check becomes more than a productivity tool. It becomes a way of deciding where our finite attention belongs. Some environments deserve redesign. Some responsibilities deserve deeper commitment. The skill is learning to tell them apart.

Enjoy the Show? Listen to Episode 816

If you’ve ever wondered whether you need more willpower or simply need to change your environment, Episode 816 explores The Fit Check and the two questions that can help you know the difference.

Explore The Mattering Effect for a deeper framework on building genuine significance, strengthening connection, and creating environments where people know they matter. The book is available wherever books are sold.

Listen to Episode 816 of Passion Struck with John R. Miles on Spotify, or watch the full episode on our YouTube Channel.

For weekly companion essays, practical toolkits, and interactive reflections, join our community at The Ignited Life on Substack.

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About the Author

John R. Miles is the author of Passion Struck, winner of the Gold Stevie® Award for Best Business Book and a Next Big Idea Club Must-Read, and host of the Passion Struck podcast, with more than 85 million downloads.

A former Fortune 50 executive and U.S. Navy officer, he has spent more than two decades synthesizing insights from psychology, neuroscience, behavioral science, leadership, and human flourishing to understand why so many people quietly lose their sense of significance despite outward success.

His work has been featured in Fortune, Inc., Forbes, ABC, NBC, Fox, and Writer’s Digest, and he has appeared on leading podcasts including 10% Happier with Dan Harris, The Next Big Idea Daily, and FranklinCovey On Leadership.

You Don’t Need More Willpower. You Need to Change THIS | John R. Miles

Frequently Asked Questions

What is the Fit Check?

The Fit Check is a two-question framework developed by John R. Miles to help determine whether a difficult situation calls for personal change or environmental change. The first question asks whether the outcome would remain essentially the same without you. The second asks whether the outcome depends specifically on something only you can contribute. Together, they help clarify where effort is most meaningfully applied.

Does the situation matter more than willpower?

The episode argues that the situation can matter enormously because environments influence which behaviors, psychological modes, and opportunities for effort become available. Willpower remains important, yet effort produces different results depending on the conditions surrounding it. The more useful question is often how personal effort and environmental fit interact.

What is Angela Duckworth’s Situated about?

Situated: Find the People and Places That Bring Out Your Best expands Angela Duckworth’s earlier work on grit by examining how people and environments interact. The book builds on the idea that grit is valuable while also recognizing that the situations people inhabit can substantially influence how effectively their effort translates into achievement and growth.

What does “grit necessary but not sufficient” mean?

Grit describes the capacity to persist toward meaningful goals over time. The episode explores why persistence alone cannot account for every outcome. When an environment continually prevents effort from producing progress, increasing persistence may have diminishing returns. Changing the conditions can sometimes make the same amount of effort substantially more effective.

What is the Hamlet Test?

The Hamlet Test comes from Jared Diamond’s exploration of when individual leaders matter. It asks whether another person living at the same moment, with comparable opportunities, could have produced the same outcome. The contrast between Harry Truman and William Shakespeare illustrates the distinction: Truman’s presidential role was comparatively replaceable, while Shakespeare’s creation of Hamlet represents an outcome deeply connected to his particular capabilities and circumstances.

What is the Mattering Market?

The Mattering Market is John’s concept for understanding environments in which people feel required to demonstrate their usefulness, achievement, or value before receiving recognition that they matter. The idea connects with Stanford researcher Jamil Zaki’s description of a “marketplace of mattering” and extends the episode’s broader exploration of how environments shape human behavior and self-perception.

How can I apply the Fit Check to my own life?

Start with one situation that repeatedly drains you. Ask whether the outcome would remain essentially unchanged if you removed yourself from the situation. If so, examine what could be redesigned around you. Then identify one responsibility where your presence genuinely changes the outcome and consider what it would mean to give that responsibility your full attention. The goal is to direct effort according to the nature of the problem rather than applying maximum intensity everywhere.

Drawing on his new book, Profits, Prophets, Coaches, and Kings: (When) Do Leaders Matter?, Diamond brings the perspective of a scientist and historian to a subject often dominated by personality-driven theories. Rather than assuming that history is made by extraordinary individuals or, at the opposite extreme, that people are simply prisoners of circumstance, he examines the complicated relationship between individual agency and the conditions in which leaders find themselves.

The conversation moves across politics, business, sports, history, and Diamond’s own life. Along the way, Harry Truman becomes an unexpected example of leadership emerging without an obvious record of preparation, Winston Churchill illustrates how dramatically leadership effectiveness can depend on context, and Seretse Khama offers a striking case of someone who may have been uniquely positioned to change the future of an entire nation. Diamond also considers figures such as Bill Gates, Mark Zuckerberg, Jeff Bezos, Steve Jobs, and John Wooden to ask whether their accomplishments depended on qualities that were uniquely their own or could have been achieved by others.

When Do Leaders Actually Matter?

The title of Diamond’s book begins with a deceptively simple question: when do leaders matter? His answer requires us to separate several ideas that are often collapsed into the word “leadership.”

A leader can make a difference because they possess something uniquely suited to a particular moment. Another leader may be highly capable but not uniquely necessary because many other people could have achieved a comparable result. And there are leaders who occupy positions of enormous authority yet make relatively little difference because the circumstances, institutions, or people around them would have produced much the same outcome without them.

Diamond describes his inquiry through three questions: do leaders matter, under what circumstances do they matter, and in what ways do they matter?

That framework complicates the familiar idea that history is primarily the story of extraordinary individuals. It also challenges the opposite assumption that circumstances determine everything. A person may possess enormous potential and still never encounter the conditions in which that potential can become consequential. Another person may appear unremarkable until circumstances demand qualities that nobody previously knew they possessed.

Leadership, in this sense, becomes a problem of fit, partly. The same person can be remarkably effective in one environment and poorly matched to another. That observation becomes especially important when we consider leaders whose reputations change depending on the period, institution, or crisis in which they operate.

The Leadership Question Jared Diamond Has Spent His Career Exploring

Diamond’s interest in leadership did not emerge in isolation from his earlier work. Throughout his career, he has asked questions about why societies develop differently, why civilizations collapse, how nations respond to crises, and how geography and environment influence human history. Leadership became the next layer of that inquiry: once we understand the larger forces shaping societies, how much room remains for an individual to change what happens?

The motivation is also personal. Diamond explains that his life has been spent under the shadow of leaders, both good and bad. He grew up in a world dominated by Hitler and married into a Polish family whose relatives suffered because of Hitler’s rule. As a scientist and teacher, he also experienced a quieter form of leadership: people who profoundly influenced his life and students who later told him that he had influenced theirs.

That combination of historical and personal experience gives his question unusual breadth. Leadership is not confined to presidents or CEOs. It appears in classrooms, families, laboratories, sports teams, businesses, governments, and religious movements. Diamond’s contribution is to ask whether the same analytical tools can help us distinguish genuine individual influence from outcomes that would probably have occurred anyway.

One of those tools is the idea of the natural experiment. Diamond explains that while researchers cannot ethically conduct controlled experiments on political leaders, history inadvertently creates comparisons when leaders die, are assassinated, are removed, are replaced, or remain in power. Similar comparisons arise when coaches are fired or when business leaders leave organizations. Those changes allow researchers to examine what happens before and after a leader’s departure and ask how much of the outcome can plausibly be attributed to the individual.

In this episode, you’ll learn

• Why individual leaders sometimes change history while others make surprisingly little difference.
• How Jared Diamond’s Hamlet test helps distinguish uniquely consequential leaders from highly capable but replaceable ones.
• What Harry Truman, Winston Churchill, and Seretse Khama reveal about leadership, timing, and circumstance.
• How natural experiments can help us study the real-world impact of political, business, and sports leaders.
• Why leadership effectiveness depends on context and why success does not necessarily equal admirable character.
• Why Diamond believes leaders should stop searching for one defining principle and instead focus on getting the many important things right.

The Hamlet Test: Could Someone Else Have Done the Same Thing?

One of the most memorable ideas in the book is Diamond’s “Hamlet test.” The test asks a deceptively difficult question: could someone else have done the same thing?

Shakespeare provides the model. Hamlet was not Shakespeare’s first play. He had experience, a theater company, and a body of work that demonstrated his abilities. Other Elizabethan dramatists were working at the same time, but their surviving work provides a basis for comparison. Diamond argues that in this particular case, Shakespeare appears to have been uniquely qualified to produce Hamlet.

The political application is much harder. Diamond argues that Bill Gates, Mark Zuckerberg, and Steve Jobs were extraordinarily capable, but it is difficult to demonstrate that nobody else could have done something comparable. There were many technically capable people who might have entered the same emerging fields.

The distinction matters because it changes how we think about greatness. A leader does not have to be the only person capable of achieving an outcome in order to have made a difference. But the stronger the evidence that no plausible substitute could have produced the same result, the stronger the case for saying that the individual was uniquely consequential.

The Hamlet test therefore shifts attention away from admiration and toward counterfactual reasoning. Instead of asking only, “How impressive was this person?” we begin asking, “What would probably have happened if someone else had been there?”

Harry Truman: When Circumstances Reveal Hidden Potential

Harry Truman offers one of the most surprising cases in Diamond’s analysis because his historical importance was difficult to see in advance.

Before becoming president, Truman had led what Diamond describes as a completely undistinguished life. Even after becoming vice president, he was not treated as someone destined for greatness. Yet when Roosevelt died, Truman suddenly found himself facing decisions of enormous consequence, including how to end the war, whether to use the atomic bomb, how to respond to the Berlin crisis, how to deal with Russia, and whether to fire General MacArthur. Diamond emphasizes that Truman made these decisions courageously despite being disliked and scorned for them at the time.

Yet Truman does not pass the Hamlet test in Diamond’s strongest sense. There were 96 senators, and Diamond believes that 95 other people possessed sufficient experience and qualifications to have potentially done what Truman did. What cannot be known is whether they would have possessed the same courage when confronted with the same decisions.

That uncertainty is precisely what makes Truman so interesting. Leadership potential is not always visible before the moment arrives. Sometimes the circumstances themselves reveal capacities that had never been tested.

The Book Behind the Question

What Happened When Jared Diamond Went Looking for His Next Question?

There is an unexpectedly revealing story behind Profits, Prophets, Coaches, and Kings. Diamond explains that his books were not the product of a carefully plotted intellectual roadmap. Instead, one question tended to lead to another.

After Guns, Germs, and Steel, he became interested in why some societies collapse while others survive. After Collapse, he considered writing a book about the cantatas of Johann Sebastian Bach. Someone advised him that such a book might sell only around 50,000 copies, so he pursued another subject instead. After Upheaval, the question of leadership emerged.

The anecdote reveals something important about the book itself. Diamond’s intellectual life appears less like a straight line than a series of questions whose implications become visible only in retrospect. He describes having kept notebooks of rivers and animals from childhood and says that he has always been interested in many different things. The themes that eventually became later books were already present, in embryonic form, in his earliest work.

That makes Profits, Prophets, Coaches, and Kings feel less like a departure from Diamond’s previous work than another turn of the same intellectual habit: looking at enormous human questions and trying to understand how individual choices interact with larger systems.

What Business, Sports, Politics, and History Teach Us About Leadership

Diamond’s framework becomes particularly useful when applied outside presidential politics. In business, he discusses the Resnicks and their role in creating an industrial-scale pomegranate juice industry. They encountered an opportunity that other growers either could not or did not want to pursue, invested heavily, and helped create a market that barely existed in the United States. Diamond considers them an example of leaders who were uniquely qualified to do what they did.

Jeff Bezos presents a different case. Diamond does not consider Bezos uniquely qualified in the way Shakespeare was uniquely qualified to write Hamlet. Other people could have created an online “everything store.” What distinguished Bezos was the way he pursued the opportunity. Mark Zuckerberg provides another variation: other people could have entered social media, but he built something in a distinctive way.

Sports provide an especially useful laboratory because results are visible and repeated. Coaches are hired, fired, replaced, and compared against measurable outcomes. Diamond discusses John Wooden, his former UCLA coach, as a particularly important example because Wooden’s influence cannot be reduced to championships or tactics. Some of his former players remembered the person they became more than the games they won.

Diamond treats that distinction as a question of values rather than an objective hierarchy. A leader such as Wooden may transform human beings, while a leader such as Konrad Adenauer may be more consequential through institutions and political outcomes. Both can matter, but they matter in different ways.

The broader lesson is that leadership cannot be evaluated without first deciding what kind of change we value. Outcomes, institutions, culture, character, and human development are all different forms of influence.

Why Leadership Cannot Be Separated From Context

One of Diamond’s most important qualifications is that leadership effectiveness is conditional. Churchill, for example, was a great wartime prime minister but an undistinguished peacetime prime minister. The qualities that made him particularly suited to crisis were not necessarily the qualities required for governing during peace. Diamond summarizes the broader principle simply: circumstances are important, and a leader who is effective under one set of circumstances may not be effective under another.

This is why the story of Seretse Khama is so revealing. Diamond considers Khama, the founding president of Botswana, an example of someone who was uniquely positioned to alter the trajectory of his country. Botswana had very few college graduates at independence; Khama was chief of its largest tribe, and diamonds were discovered on his land. He therefore occupied a position from which he could make a consequential institutional decision: whether those resources belonged to his tribe or to the nation of Botswana.

The same individual in another country might have had little historical significance. Diamond makes the point that if Khama had been founding president of Somalia, we might never have heard of him in the same way. The person and the circumstance cannot be separated.

That insight has implications beyond history. In our own lives, we often evaluate ourselves as though our abilities exist independently of context. Yet opportunity, timing, institutions, relationships, and crises all influence whether a particular strength can become useful. Sometimes the challenge is developing a capability; sometimes it is recognizing the environment in which that capability can finally matter.

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About Today’s Guest, Jared Diamond

Jared Diamond is a celebrated scientist, geographer, historian, author, and explorer whose work has examined some of the largest questions in human history. He is the author of influential books including The Third Chimpanzee, Guns, Germs, and Steel, Collapse, and Upheaval. His scholarship has explored human evolution, geography, environmental change, societal collapse, national crises, and the forces that shape civilizations.

Diamond is a Pulitzer Prize-winning author and a MacArthur Fellow. His career has also crossed disciplinary boundaries: in the interview, he describes beginning as a physiologist before moving into fieldwork on New Guinea birds and eventually working across geography, history, anthropology, and environmental science.

His latest book, Profits, Prophets, Coaches, and Kings: (When) Do Leaders Matter?, applies this lifelong curiosity to leadership, asking when individuals genuinely change outcomes, when they are replaceable, and how circumstance determines whether a person’s abilities become historically consequential.

What Makes a GREAT Leader? The Answer Is Not What You Think | Jared Diamond

Learn More and Connect

👉 All episode links, my books You Matter, Luma, and The Mattering Effect, The Ignited Life newsletter, and the Start Mattering store are here: linktr.ee/John_R_Miles

FAQ (Frequently Asked Questions)

What Makes a Great Leader?

A great leader cannot be defined by a single universal characteristic. Jared Diamond’s approach suggests that leadership has to be evaluated in relation to circumstances, opportunities, alternatives, and outcomes. Some leaders are uniquely qualified to accomplish what they did; others are highly capable but could have been replaced by someone else; and some make little difference because circumstances or institutions would have produced similar results.

When Do Individual Leaders Actually Matter?

Individual leaders matter when their decisions, abilities, or actions materially alter an outcome that might otherwise have been different. Diamond emphasizes that this depends heavily on circumstances. The same leader can be effective in one environment and poorly matched to another, which is why leadership has to be understood alongside the historical moment in which it operates.

Do Great Leaders Shape History or Are They Shaped by Circumstances?

Diamond rejects an overly simple choice between individual agency and circumstance. Leaders operate within conditions they did not create, but they can sometimes recognize, create, or exploit opportunities within those conditions. The historical outcome often emerges from the interaction between the person and the moment.

What Is Jared Diamond’s Hamlet Test?

The Hamlet test asks whether anyone else could have achieved the same thing. Diamond uses Shakespeare’s Hamlet as the model because Shakespeare appears to have been uniquely qualified to produce that particular work. In leadership, the test helps distinguish people whose accomplishments depended on highly unusual individual capabilities from those whose achievements could plausibly have been replicated by others.

What Can Harry Truman Teach Us About Leadership?

Harry Truman demonstrates that consequential leadership potential is not always visible beforehand. Diamond describes Truman as someone whose earlier life gave little indication that he would become an outstanding president, yet circumstances placed him in a position where he had to make extraordinarily difficult decisions. His example suggests that some leadership qualities become visible only when the right—or extraordinarily demanding—moment arrives.

Can a Successful Leader Be an Admirable Person?

Success and moral admiration are separate questions. Diamond explicitly distinguishes between leaders who produce significant outcomes and leaders whose character makes them worthy of emulation. His discussion of John Wooden, alongside more complicated examples, suggests that evaluating leadership requires us to ask both what a leader accomplished and what values, institutions, or human consequences were left behind.

What Is the Most Important Leadership Lesson From Jared Diamond?

Diamond’s answer is deliberately resistant to the search for a single principle. He says that when people ask for the “one thing,” his answer is that there are 37 things. For leaders, the lesson is to stop searching for one most important characteristic and instead focus on getting the many interdependent elements of leadership right.

Drawing from her new book, Situated: Find the People and Places That Bring Out Your Best, Angela explains why grit and perseverance remain essential while also arguing that our external circumstances can profoundly alter our inner landscape. The right environment can reveal capabilities that were previously suppressed, strengthen motivation, and even make it easier to act according to our values.

The conversation also moves into a particularly important question for Passion Struck: what happens when our environments influence not only what we do, but whether we feel that we matter? Through stories about her childhood, leadership, education, ethical behavior, and everyday acts of service, Angela shows how seemingly small environmental signals can shape our confidence, identity, character, and sense of significance.

How Does Your Environment Shape Who You Are?

We often approach personal growth as an internal project. We look at our habits, mindset, discipline, motivation, and ability to persevere. Angela’s research invites us to widen that lens. She explains that whether we feel optimistic or discouraged, whether our work feels meaningful or whether we feel that we matter, is influenced not only by what exists inside us but also by where we are.

That distinction matters because environments are constantly giving us information about what is normal, valued, possible, and expected. A supportive environment can make certain behaviors easier and allow qualities that already exist within us to emerge more fully. A restrictive environment can suppress those same capabilities. The central idea behind Situated is therefore not that individual agency disappears, but that agency operates within circumstances that can either amplify or constrain it.

Angela’s perspective also challenges the assumption that changing ourselves is always the first answer. Sometimes the more intelligent intervention is to examine the situation itself.

Why Grit and Willpower Are Not Enough

Angela Duckworth’s earlier work made grit synonymous with passion and perseverance. In this conversation, she adds an important dimension to that idea. She doesn’t abandon grit; instead, she places it inside a larger understanding of human behavior.

A determined person can work extraordinarily hard, but effort produces very different results depending on the circumstances in which that effort is applied. Angela illustrates this through the example of entrepreneurship: a gritty, talented person may have enormous ability, but their opportunities depend on whether they live in an environment that lets them express and be rewarded for it.

This is why willpower can be an inefficient place to begin when trying to change behavior. If the surrounding conditions continuously create friction, distraction, temptation, or stress, a person must repeatedly fight the same battle. Changing the conditions can reduce the number of battles that need to be fought in the first place.

Why Willpower Is Often the Last Place We Should Start

The conversation about behavior change becomes especially practical when Angela discusses how situations influence our choices. She points to research showing that people frequently cling to familiar patterns even when they consciously want something different. This status quo bias can affect everything from the people we spend time with to the technologies we adopt and even high-stakes decisions.

Rather than continually asking, “How can I become more disciplined?” it can be more useful to ask, “What is my environment making easy, and what is it making difficult?” That shift moves behavior change upstream, toward the cues and circumstances that precede a decision.

The People and Places That Bring Out Your Best

Our environments are not merely physical spaces. They include our relationships, colleagues, mentors, peers, families, institutions, and cultures. These social environments establish subtle expectations about how we should behave and who we can become.

Angela’s own experience illustrates this beautifully. She recalls an aunt and uncle who gave her something she believes became a lasting source of confidence: unconditional positive regard. They did not communicate that every behavior was acceptable. Instead, their affection did not depend upon her performance. When she entered the room, they made her feel genuinely welcomed and valued. That distinction between unconditional worth and conditional approval became an important part of her understanding of human flourishing.

The implication is profound. Sometimes the people who bring out our best are not those who constantly push us to perform. They are the people whose presence gives us enough psychological safety to become more fully ourselves.

Why Changing Your Environment Can Change Your Behavior

One of the most useful ideas in Situated is that behavior change does not always require more self-control. Sometimes it requires redesigning the situation around the behavior.

Angela discusses the example of technology: even when an excellent tool is freely available, people often fail to use it consistently because adopting the technology requires changes in habits and behavior. The existence of a better option does not automatically create better behavior.

This principle applies personally as well. If a particular setting repeatedly brings out impatience, distraction, pessimism, or passivity, changing the setting may be more effective than continually trying to suppress those responses. The goal is not to escape every difficult situation. It is to become more aware of which conditions consistently support the person you want to be.

Changing the Situation Instead of Trying Harder

Angela makes an especially important distinction between our past situations and our current ones. We cannot change the family, neighborhood, culture, or circumstances into which we were born. But we can influence many of the situations into which we move today.

She suggests a simple thought experiment: if you notice that you become less irritable around optimistic people, spend more time with optimistic people. If certain environments consistently bring out your curiosity, humor, generosity, or courage, deliberately seek more of those environments.

This is a form of situational agency. It acknowledges the power of context without turning context into an excuse.

In this episode, you’ll learn

• How your environment influences your behavior, identity, motivation, and sense of possibility.
• Why grit and perseverance matter, but why they may not be enough without supportive circumstances.
• How the people and places around you can bring out different versions of who you are.
• Why changing the situation can sometimes be more effective than relying on willpower.
• How leaders can act more like gardeners by creating conditions where people can exercise autonomy and flourish.
• Why mattering comes from feeling part of and in service to something larger than yourself.

The Person and the Situation: Where Does Agency Begin?

Perhaps the deepest tension in this conversation is the relationship between personal responsibility and environmental influence.

Angela resists the temptation to divide human behavior into a neat percentage: 70 percent person, 30 percent situation, or vice versa. Her answer is more nuanced. Situations can reveal capabilities that were already present, but they can also change us by creating experiences that strengthen motivation and develop those capabilities over time.

Her story about her parents captures this idea personally. They immigrated to the United States seeking what she calls the “land of opportunity.” In her view, the environment did not simply create their intelligence, perseverance, or talent. It provided circumstances in which those qualities could be expressed, rewarded, and developed further.

That leads to a more productive question than whether the person or the situation matters more: What situations allow the best parts of me to emerge, and what situations consistently suppress them?

Can Leaders Create Environments Where People Thrive?

Angela and John connect the ideas in Situated directly to leadership through the metaphor of the gardener.

A gardener cannot dictate exactly how a plant will grow. The gardener creates conditions: good soil, sunlight, water, protection, and room to develop. Angela sees leadership in much the same way. Leaders cannot manufacture another person’s potential, but they can create an environment in which that potential has a greater opportunity to emerge.

This approach also preserves autonomy. Angela describes a simple rule in her own laboratory: when she gives someone an assignment, she should clarify the what, the why, and the when, while allowing that person to determine the how. That structure communicates both accountability and trust.

How Leaders Create Conditions for People to Flourish

The gardener metaphor becomes especially powerful when applied to organizational culture. A leader’s responsibility is not simply to tell people what to do. It is to examine whether the surrounding system creates unnecessary friction, suppresses initiative, or makes ethical behavior difficult.

Angela argues that leaders and parents have what she calls a form of situational responsibility: because our choices affect other people’s environments, we have a responsibility to create conditions in which people have a better opportunity to flourish.

The Stage You Choose Can Change the Person You Become

One of the most revealing moments of the interview comes when Angela explains an idea that almost made it into Situated. Drawing on the experience of actors, she describes how the physical set, costume, and role can influence the person who steps into them. A doctor’s coat, an artist’s smock, a boardroom, a subway platform, or another carefully constructed setting can evoke different behaviors and identities.

That observation leads Angela to a Shakespearean idea: if you want to be a different person, choose a stage where that is the role.

She does not mean that we should attempt to recreate our childhood or abandon our current responsibilities. Instead, she suggests identifying qualities from earlier versions of ourselves that we miss—perhaps curiosity, humor, kindness, or playfulness—and then asking where those qualities naturally emerge.

This is one of the most practical interpretations of Situated: rather than endlessly demanding that your personality change through force, look for situations that invite the version of yourself you want to become.

Can an Environment Make People Feel Like They Matter?

The conversation takes its most distinctly Passion Struck turn when John introduces the idea of a “marketplace of mattering”: a world in which people can feel that they constantly have to prove their worth through achievement, rankings, productivity, and recognition. Angela connects this concern to the older psychological idea of unconditional positive regard.

Mattering is different from simply being included. It involves feeling that your presence has significance and that you contribute to something beyond yourself. Angela’s own definition of purpose or mattering is particularly memorable: feeling that you are part of and in service to something larger than yourself.

She illustrates the idea with an unexpectedly ordinary story about Pete, the security guard in her building. When Angela noticed that Pete sounded as though he was developing a cold, she remembered her mother’s instinct to care for someone and brought him mint tea with honey. It was a tiny gesture with no measurable achievement attached to it. Yet Angela says she felt good for the rest of the day because she had been part of something beyond herself and had done something small in service of another person.

The story brings the episode back to its most human point: a meaningful life is not necessarily constructed through spectacular acts. Sometimes we experience our own significance through ordinary moments in which we recognize another person’s humanity and respond with care.

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About Today’s Guest, Angela Duckworth

Angela Duckworth is a psychologist, MacArthur Fellow, bestselling author, and the Rosa Lee and Egbert Chang Professor at the University of Pennsylvania. She is widely known for her research on grit, motivation, perseverance, character, and behavior change. Her TED Talk on grit is among the most viewed TED Talks of all time, and her first book, Grit: The Power of Passion and Perseverance, became a #1 New York Times bestseller and has sold more than five million copies worldwide.

Her latest book, Situated: Find the People and Places That Bring Out Your Best, builds on her earlier work by examining the powerful influence of situations on human behavior and potential. Angela has advised organizations including the World Bank, NBA and NFL teams, and Fortune 500 companies. She is also a co-founder of Character Lab, a nonprofit dedicated to advancing scientific insights that help children thrive.

Before becoming a researcher, Angela taught mathematics and science in public schools, worked as a management consultant at McKinsey, and founded an academic enrichment program for low-income children. She earned her undergraduate degree in neurobiology from Harvard, an MSc in neuroscience from Oxford as a Marshall Scholar, and a PhD in psychology from the University of Pennsylvania.

If You Want to Change Your Life, Look Around You | Angela Duckworth

Learn More and Connect

👉 All episode links, my books You Matter, Luma, and The Mattering Effect, The Ignited Life newsletter, and the Start Mattering store are here: linktr.ee/John_R_Miles

FAQ (Frequently Asked Questions)

How does your environment shape who you are?

Your environment influences the thoughts, emotions, expectations, and behaviors that become part of everyday life. Angela argues that the situations around us can bring out different versions of ourselves, affecting whether we feel optimistic or discouraged, engaged or depleted, and whether we believe our efforts matter.

Can changing your environment change your behavior?

Yes. Changing the situation can alter the cues, expectations, social norms, and friction surrounding a behavior. Angela’s perspective suggests that instead of repeatedly relying on willpower, we can sometimes make change easier by choosing or designing circumstances that support the behavior we want.

Why isn’t willpower enough to create lasting change?

Willpower remains important, but it operates inside a larger environment. When circumstances continually create temptation, stress, distraction, or unnecessary friction, even highly determined people can struggle. Changing the conditions can reduce the amount of self-control required.

How do the people around you influence your success?

People establish social norms about what is acceptable, valuable, and possible. Mentors can expand our sense of potential, peers can influence our standards, and supportive relationships can create the psychological conditions in which qualities such as confidence, curiosity, and perseverance are more likely to emerge.

How can you find the people and places that bring out your best?

Pay attention to how you behave in different environments. Notice where you become more curious, generous, courageous, energetic, or optimistic, and examine which people and circumstances are present in those moments. You cannot change the situations into which you were born, Angela explains, but you can influence many of the situations you move into today.

Do situations reveal who we really are?

They can do both: reveal and shape us. A supportive situation may give dormant capabilities room to emerge, while repeated experiences in a particular environment can also strengthen motivation and change what we become capable of over time.

How can leaders create environments where people thrive?

Angela suggests thinking like a gardener. Leaders cannot manufacture another person’s growth, but they can create conditions that provide resources, autonomy, clarity, and room for individual strengths to develop. Her own leadership practice emphasizes communicating what needs to be accomplished, why it matters, and when it needs to happen while giving people freedom over how they accomplish it.

Can an environment affect whether someone feels like they matter?

Yes. Angela connects mattering with the experience of being part of and in service to something larger than yourself. Environments that communicate unconditional worth can help people experience significance that is not dependent entirely on performance, rankings, or achievement.

Why does Angela Duckworth say we should choose our “stage” carefully?

The metaphor comes from the way actors are influenced by the settings, costumes, and roles they inhabit. Angela argues that we can similarly place ourselves in environments that evoke qualities we want to express more often. If you want to become more curious, playful, kind, or courageous, it is worth asking which situations naturally bring those qualities forward.

What is the central idea behind Situated?

The central idea is that the people and places around us matter enormously. Angela’s argument is not that individual responsibility disappears, but that our circumstances influence which parts of ourselves emerge, how motivated we become, what behaviors feel natural, and how much opportunity we have to develop our potential.

Former NFL player, West Point graduate, and author Caleb Campbell knows this cycle intimately. He spent years building his identity around performance and achievement, eventually reaching the dream he had worked so hard to attain, only to discover that external success had not resolved the deeper questions of worth, belonging, and identity.

In this conversation, Caleb explains how achievement can become a survival strategy, why our performance can gradually become intertwined with our sense of self, and how learning to separate worth from accomplishment can create a healthier relationship with ambition. His story offers a thoughtful exploration of what it means to move from surviving your life to participating in it.

When Success Becomes Part of Your Identity

Caleb’s story begins with a familiar achievement pattern: set a goal, work harder than everyone else, close the gap between where you are and where you want to be, and keep moving toward the next milestone. That approach served him extraordinarily well. It helped take him from the Texas Panhandle to West Point, Division I football, military service, team captaincy, and eventually the NFL. Yet the same qualities that enabled him to perform at an elite level eventually became entangled with his sense of personal worth.

Caleb describes reaching the dream and discovering that something essential was missing. He had followed what he calls the playbook of “ruthless ambition,” only to find himself externally successful while internally bankrupt. Football had become more than a profession or game; it had become a source of acceptance, validation, and belonging. When that identity disappeared, he was forced to confront a difficult question: Who am I when the thing that made me feel valuable is no longer there?

That question is central to understanding why success can sometimes feel strangely unsatisfying. When achievement becomes responsible for providing emotional security, every accomplishment has to carry a burden it was never designed to carry. The goal keeps moving because the underlying need has not been addressed.

The Childhood Roots of Performance and Belonging

Before Caleb became an NFL athlete, he was a young boy trying to understand where he belonged. He remembers being a talented athlete while also feeling deeply isolated and bullied during middle school and high school. Even while scoring touchdowns and helping lead his team to a state championship, he recalls feeling alone and excluded. At the same time, he noticed that other students would seek him out privately when they were struggling, revealing a part of himself that existed beneath the athlete and the performer: a desire to help people and make a meaningful difference.

That distinction becomes important later in Caleb’s story. The drive to accomplish things was real, but it was not the whole story. Beneath the achievements was a deeper desire to live meaningfully and serve other people. As his life became increasingly organized around performance, however, the distinction between doing something meaningful and proving that he was worthy became harder to see.

Caleb’s experience shows how easily identity can develop around what receives reinforcement. When accomplishment brings approval, belonging, and security, performance begins to feel like more than something we do. It becomes evidence of who we are.

The Moment Achievement Stops Feeling Like Enough

Caleb’s concept of Unstriving emerged from a deeply personal realization. After the NFL, he entered what he describes as an identity crisis. The career that had provided structure, validation, and belonging was suddenly gone, leaving him with the difficult work of rediscovering who he was apart from the game. He describes the experience as a process of healing, expanding, and evolving at an identity level.

The insight that eventually emerged was not that ambition itself had been the problem. Rather, Caleb began questioning the relationship he had developed with striving. His entire life had been organized around doing more, being more, working harder, working longer, and moving faster in order to close the gap between his current self and the person he believed he needed to become.

He eventually describes the transformation in remarkably simple terms: he untethered himself from the need to endlessly strive to make his life happen. He went from “surviving” his life to “participating” in it. The distinction captures the deeper purpose behind Unstriving: changing our psychological relationship with achievement so ambition becomes an expression of who we are rather than a test we continually have to pass.

The Survival Self and the Life We Were Meant to Live

One of the most compelling ideas Caleb introduces is the distinction between the survival self and what he calls the soul path. He explains that we all develop ways of navigating the world that help us find safety, belonging, acceptance, and validation. Those strategies can be extraordinarily effective. They can make us disciplined, resilient, productive, successful, and capable of enduring enormous pressure.

The difficulty emerges when a strategy that helped us survive becomes the only way we know how to live.

Caleb describes his own survival path as an attempt to become the person he believed others expected him to be. He wanted to belong, to perform well, and to live according to the standards he had internalized. Yet there was an important cost: he did not feel safe enough to reveal the deeper emotional challenges he was carrying because he feared that being fully seen might threaten the belonging he had worked so hard to secure.

This is where the survival self becomes particularly relevant to anyone who has ever felt trapped by an identity that appears successful from the outside. The strategy can keep producing results long after it stops producing fulfillment. Caleb’s distinction is ultimately about moving from merely surviving life toward discovering the deeper conditions that allow a person to feel nourished, connected, and fully alive.

In this episode, you’ll learn

• Why high achievers can continue feeling inadequate even after reaching major goals.
• How performance can gradually become intertwined with identity and self-worth.
• Why success can become a source of validation, belonging, and emotional security.
• How Caleb Campbell’s NFL career contributed to an identity crisis after football ended.
• What Caleb means by the survival self and why it can be highly effective while still limiting our lives.
• How childhood experiences can influence the way we pursue achievement, belonging, and acceptance.
• Why people often return to familiar patterns even after recognizing that they have outgrown them.
• What liminal space is and why uncertainty is an essential part of identity transformation.
• How Unstriving changes the relationship between ambition, effort, and self-worth.
• Why healthy ambition can coexist with inner peace, authenticity, and wholeness.
• How to distinguish working to prove your worth from working because you already know your worth.
• Why Caleb believes the energy behind ambition matters as much as the ambition itself.
• How to pursue meaningful success without sacrificing yourself in the process.

Unstriving: A Different Way to Pursue a Meaningful Life

Caleb did not arrive at Unstriving because he decided ambition was misguided. In fact, he says the opposite: he has never been more ambitious. What changed was the source of that ambition. He began to distinguish between working to prove his worth and working from a place of already knowing his worth.

Caleb’s own story makes that distinction easier to understand. For much of his life, accomplishment was tied to a question that lived beneath the visible goal. If he performed well enough, perhaps he would finally feel secure. If he achieved enough, perhaps he would finally feel significant. If he became enough of what others expected him to be, perhaps belonging would become permanent.

Unstriving changed the question. Caleb could still work hard, set ambitious goals, serve others, and pursue excellence, but achievement no longer needed to settle the question of his worth. His ambition could come from curiosity, inspiration, purpose, and a desire to contribute rather than from fear and scarcity.

He offers a memorable metaphor for this shift: life is a river that is already flowing. Much of modern achievement culture teaches us to swim harder, move faster, and push against the current. Caleb’s experience led him toward a different relationship with effort—learning how to rest in the river while continuing to move toward meaningful goals. In his words, the goal is still ambition and accomplishment, but without arriving at the destination exhausted by the journey.

This is the deeper promise of Unstriving. The objective is to build a life in which ambition and wholeness can coexist, allowing achievement to become something that grows from a secure sense of self rather than something constantly asked to create one.

What Happens When You Outgrow the Person You Became

There are periods in life when the identity that once gave us direction begins to feel restrictive. A career changes, a relationship ends, children grow older, an athletic career comes to a close, or a long-pursued goal is finally achieved. The external circumstances may change quickly, but the internal identity built around them often takes much longer to evolve.

Caleb describes this transition through the idea of liminal space: the uncertain territory between what was and what will be. This period can be uncomfortable because the old identity no longer provides the same certainty while the new identity has not yet fully emerged.

The temptation during these periods is to return to what we know. Caleb makes an important observation about why that happens: without sufficient internal capacity to tolerate uncertainty, people naturally gravitate toward familiar patterns, even when they have already outgrown them. The work of transformation therefore involves more than identifying what needs to change. It requires developing the capacity to remain present while the old structure of identity is changing.

That insight has implications far beyond career transitions. Many recurring patterns persist because they provide familiarity and psychological security, even when they no longer fit the person we are becoming.

Healthy Ambition Begins With Knowing Your Worth

The final movement of the conversation addresses a question that sits beneath almost every discussion of high performance: What happens when your identity is no longer dependent on being the best?

Caleb distinguishes confidence in a person’s skills from confidence in knowing who they are. When identity is tied tightly to performance, a change in circumstances can produce an identity crisis because the evidence we previously used to define ourselves has disappeared. Learning who we are apart from performance creates a larger and more stable sense of self.

This is particularly important for people operating in competitive environments. The healthiest form of ambition does not require abandoning standards or becoming indifferent to outcomes. It requires changing the emotional foundation beneath the pursuit. Caleb describes his current ambition as coming from service and a desire to reach his fullest potential, rather than from an attempt to prove himself.

That is why his philosophy ultimately returns to the question of where we begin. If achievement starts from fear, scarcity, or a belief in our own insufficiency, those conditions can continue shaping the experience of success even after the goal has been reached. Caleb’s alternative is to begin from wholeness, purpose, and alignment, allowing those qualities to remain present throughout the pursuit.

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About Today’s Guest, Caleb Campbell

Caleb Campbell is a West Point graduate, former Army officer, NFL athlete, keynote speaker, and author who helps leaders and teams perform under pressure without sacrificing their well-being.

After building a life around achievement and reaching the highest levels of military and professional football, Caleb experienced an identity crisis that forced him to reconsider his relationship with success, performance, and self-worth. His subsequent journey of healing and personal transformation became the foundation for his work and his book, Unstriving.

Today, he speaks to organizations and leaders about healthy ambition, internal capacity, identity, and how to rise under pressure while creating a more sustainable and fulfilling definition of success. In his current work, he helps people understand how to pursue their fullest potential without making achievement responsible for proving their worth.

Why You Can’t Change: BREAKING the Cycle of Your Past | Former NFL Player Caleb Campbell

Learn More and Connect

👉 All episode links, my books You Matter, Luma, and The Mattering Effect, The Ignited Life newsletter, and the Start Mattering store are here: linktr.ee/John_R_Miles

FAQ (Frequently Asked Questions)

Why do I never feel like I’m doing enough?

The feeling often becomes persistent when accomplishment has become connected to self-worth. Each achievement can provide temporary reassurance, but if the underlying question is whether you are worthy, significant, accepted, or enough, the next goal eventually becomes necessary to restore that reassurance. Caleb Campbell’s experience illustrates how this cycle can continue even after reaching levels of success that once seemed certain to bring fulfillment.

What does Unstriving mean?

For Caleb Campbell, Unstriving describes a different relationship with achievement rather than an abandonment of ambition. He explains that he still considers himself highly ambitious, but his ambition is no longer primarily driven by fear, scarcity, or the need to prove his worth. Unstriving means pursuing meaningful goals from a deeper sense of alignment and self-worth.

What is the survival self?

The survival self is the version of ourselves that develops around strategies for finding safety, acceptance, belonging, validation, or security. Caleb explains that this self can become highly capable and successful because it is designed to navigate challenges effectively. The difficulty arises when the strategies that helped us survive become the primary framework through which we live, limiting our ability to express who we are more fully.

What does Caleb Campbell mean by the soul path?

Caleb uses the idea of the soul path to describe a deeper way of living that moves beyond the strategies developed primarily for survival. He connects it with greater satisfaction, nourishment, fulfillment, and a more authentic expression of who we are. For him, the movement toward this path involves becoming more aware of the identity and behaviors that were developed to secure belonging and then learning to live from something deeper.

What is liminal space?

Liminal space is the uncertain period between an old identity or way of living and what comes next. Caleb describes it as the space between “what was” and “what will be.” These periods can feel uncomfortable because familiar structures have lost their authority while a new sense of self is still developing. Learning to tolerate that uncertainty can become an important part of meaningful personal transformation.

How can I separate my self-worth from my achievements?

A useful starting point is to examine what you believe an accomplishment will give you emotionally. If success is expected to make you worthy, secure, accepted, or significant, the achievement is carrying a psychological responsibility beyond its practical purpose. Caleb’s own transformation involved learning to work from a place of already knowing his worth, allowing achievement to become an expression of his values rather than evidence that he deserves to belong.

Does healthy ambition mean doing less?

Caleb’s experience suggests that healthy ambition can remain highly demanding. He explicitly explains that he has never been more ambitious, while also describing a fundamental change in the energy behind that ambition. The difference is that his goals are no longer primarily an attempt to prove his worth or escape difficult internal emotions.

Why does success sometimes stop feeling satisfying?

Success can become unsatisfying when it is being used to resolve an internal problem that external accomplishment cannot solve. If achievement has become a source of identity, belonging, or validation, reaching one goal may provide temporary relief before the need for another achievement returns. Caleb’s story illustrates how stepping back from this cycle can create room for a more meaningful relationship with ambition and success.

How can I break old patterns that I have outgrown?

Caleb’s discussion of liminal space suggests that recognizing an outdated pattern is only part of the process. Change also requires developing the internal capacity to tolerate uncertainty while a new identity is emerging. Without that capacity, familiar behaviors can feel safer than the unknown, even when we understand intellectually that the old pattern no longer serves us.

Yet when developmental psychologists examine the data, a completely different reality emerges.

In Episode 812 of Passion Struck, Dr. Margie Lachman, a leading pioneer in lifespan psychology and author of Primetime: A New Vision for Midlife, joins host John R. Miles to debunk the cultural myths surrounding middle age. Drawing on over three decades of data from the landmark MacArthur Foundation MIDUS study (Midlife in the United States),

Dr. Lachman explains why the traditional concept of a midlife crisis is largely a myth—and how this stage can actually represent a period of peak mastery, growth, and purposeful contribution.

Is Midlife Really a Crisis?

The short answer from thirty years of scientific research is no.

Where the Midlife Crisis Myth Came From

The cultural obsession with the midlife crisis originated largely in mid-twentieth-century psychoanalytic literature and was subsequently amplified by novels, television, and Hollywood films. These stories created a dramatic archetype: an individual reaching middle age, noticing superficial physical signs of aging like graying hair or wrinkles, and spiraling into acute despair over lost youth.

What Research Actually Says About Midlife

When researchers track thousands of adults longitudinally across decades, a universal midlife crisis simply does not materialize.

While middle age involves navigating complex responsibilities, midlife psychology demonstrates that overall life satisfaction and happiness remain remarkably stable throughout adulthood. Rather than dropping sharply, most individuals maintain their baseline well-being, with life satisfaction often trending upward into their sixties and seventies.

Why Midlife Can Be a Time of Growth

Far from being a period of passive stagnation, middle age offers fertile ground for profound personal growth in midlife.

Why Your Personality Can Still Change

A lingering misconception in popular psychology is that adult personality becomes rigid and unchangeable after your twenties. Lifespan psychology shows that personality development continues across the entire life course. Navigating major career pivots, evolving family dynamics, and new social roles helps individuals build greater emotional regulation, self-reflection, and psychological resilience.

Why Your Sense of Control Can Get Stronger

A key finding from the MIDUS study is that perceived control—the balance between personal mastery and life constraints—actually peaks during the midlife transition. As we accumulate life experience, we learn how to navigate setbacks, adapt our strategies, and achieve meaningful goals despite inevitable friction, resulting in a stronger internal sense of agency.

How Experience Becomes an Advantage

Cognitive research from the MIDUS study challenges the assumption of early cognitive decline. Longitudinal tracking reveals that core memory, verbal skills, and practical problem-solving abilities remain highly resilient well into the late fifties and early sixties. The practical wisdom and pattern recognition gained over decades of real-world decision-making provide distinct advantages in both professional and personal domains.

In this episode, you’ll learn

• Is midlife really a crisis? According to Dr. Margie Lachman’s 30-year MIDUS study, only a small percentage of adults experience an acute midlife crisis. Most people maintain consistent levels of happiness, cognitive stability, and life satisfaction throughout their 40s, 50s, and into their 60s.
• Why do we feel a loss of control in midlife? Research shows that perceived control actually peaks in midlife because of accumulated experience, personal mastery, and resilience built through overcoming past setbacks.
• What is generativity? Erik Erikson coined generativity as the psychological drive to care for, mentor, and contribute to the next generation. Lachman’s findings show that generativity and purposeful contribution drive cognitive longevity and physical health.
• Can you change your health trajectory in midlife? What happens in midlife does not stay in midlife. Managing blood pressure, maintaining consistent daily physical activity (such as brisk walking), and prioritizing restorative sleep provide immediate cognitive benefits while protecting against future cardiovascular disease and cognitive impairment.

Is It Too Late to Change Your Life in Midlife?

Many people entering middle age fall into the trap of believing their trajectory is permanently fixed.

Why Change Doesn’t Have an Age Limit

The science of adult development confirms that changing your life in midlife is not only possible but structurally supported by accumulated life experience. When individuals reach forty or fifty, they often have decades of productive, healthy living ahead of them. Middle age provides a unique vantage point: you have accumulated the self-knowledge to identify what does not work, while retaining ample time to build new paths forward.

How Midlife Can Become a Turning Point

Midlife is inherently a qualitative transition rather than a fixed chronological number. It serves as a natural reflective junction point to transition from simply making your life to becoming who you truly want to be. This developmental window allows you to shed external expectations, re-evaluate personal values, and pursue meaningful goals with intentionality.

What You Do in Midlife Can Shape How You Age

Dr. Lachman emphasizes a central principle of developmental health: what happens in midlife does not stay in midlife. Middle age represents the critical foundation for healthy aging and aging well.

The Health Choices That Matter Later

Asymptomatic physiological shifts—such as gradual declines in bone density, muscle mass, and metabolic efficiency—begin quietly during our thirties and forties. Managing blood pressure, monitoring glucose levels, avoiding smoking, and moderating alcohol intake during midlife significantly reduce the long-term risk of cardiovascular disease, cognitive impairment, and late-life disability.

Why Physical Activity Becomes So Important

Engaging in regular physical activity serves as a primary foundation for cognitive resilience and physical longevity. Dr. Lachman’s research through the Boston Roybal Center for Active Lifestyle Interventions demonstrates that adopting a consistent daily walking routine (between 5,000 and 8,000 steps per day) yields profound benefits for cardiovascular capacity, joint mobility, and midlife and mental health.

How Your Midlife Habits Can Influence Your Future

Adopting protective health behaviors delivers immediate dividends in daily energy, sleep architecture, and mental clarity. Concurrently, maintaining an active, health-conscious lifestyle ensures that the vitality of your middle years extends seamlessly into the second half of life.

Why Purpose Matters More as We Get Older

Sustaining a clear sense of purpose in midlife acts as an essential psychological and biological buffer against premature decline.

What Generativity Means

Originating from psychoanalyst Erik Erikson’s stages of psychosocial development, generativity refers to the deep concern for guiding, supporting, and contributing to the next generation. It extends far beyond parenting to encompass professional mentorship, community leadership, creative expression, and civic engagement.

Why Helping Others Can Improve Your Own Well-Being

Engaging in generative activities is directly linked to higher levels of midlife happiness, greater psychological resilience, and reduced rates of cognitive impairment in later years. Stepping outside narrow self-interest to enrich the lives of younger generations creates an enduring sense of significance and mattering.

Why Relationships Matter in Midlife

Social connections represent the cornerstone of psychological and physiological health across adulthood.

The Importance of Giving and Receiving Support

Middle-aged adults occupy the “sandwich generation” role—simultaneously supporting growing children and aging parents. Thriving in this stage requires maintaining a healthy equilibrium between providing support to others and allowing yourself to receive support in return.

How Connection Protects Against Loneliness

Loneliness is not simply a matter of physical isolation; it is a subjective emotional state rooted in feeling misunderstood, unsupported, or invisible. Cultivating reliable reciprocal relationships protects against chronic stress, cognitive decline, and emotional burnout.

Why Belonging Still Matters as We Age

Feeling that you actively belong to a family, organization, or community satisfies a core psychological need; when individuals feel that their presence makes a tangible difference to those around them, their capacity for resilience and long-term thriving multiplies.

How to Make the Most of Your Midlife Years

To optimize the middle years and lay a durable groundwork for the decades ahead, apply these evidence-based principles:

• Lean Into Generative Contribution: Use your accumulated expertise, skills, and time to mentor others, invest in community projects, and build an enduring positive legacy.
• Adopt a Gains-Based Mindset: Shift your attention away from superficial physical losses and focus intentionally on the gains in emotional stability, wisdom, and decision-making mastery.
• Build Daily Physical Habits: Integrate consistent physical movement into your schedule through daily brisk walking, structured resistance training, and proper sleep routines.
• Cultivate Reciprocal Relationships: Nurture high-trust connections where you can openly share burdens and receive support rather than carrying caregiving responsibilities entirely alone.

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Vinted

Ready to clean out your closet and make some extra money? Download the Vinted app for free and start listing. With no seller fees, you keep every dollar you earn.

About Today’s Guest, Margie Lachman

Margie Lachman, PhD, is a leading psychologist and researcher whose work has transformed how we understand midlife, aging, and development across the lifespan. She is the Minnie and Harold Fierman Professor of Psychology at Brandeis University and directs the Lifespan Development Lab.

For more than three decades, Lachman has studied the psychological, cognitive, physical, and social factors that influence how we age, with particular attention to perceived control, health behaviors, cognitive functioning, and well-being. She is a longtime investigator with the landmark Midlife in the United States (MIDUS) study, one of the most important longitudinal studies of adult development.

In her book Primetime: A New Vision for Midlife, Lachman challenges the familiar idea of the “midlife crisis” and reframes the middle years as a period of opportunity, growth, contribution, and possibility. Her research suggests that midlife can bring greater knowledge, emotional regulation, experience, and a stronger sense of control—while also offering an important window to make choices that shape our later years.

Her distinguished career has earned recognition from the American Psychological Association and the Gerontological Society of America. Through her research and writing, Lachman offers a compelling message: getting older isn’t simply about losing what we once had. It can also mean gaining perspective, purpose, control, and a deeper ability to shape the life ahead.

Why Getting Older Is BETTER Than You Think | Margie Lachman Reveals

Learn More and Connect

👉 All episode links, my books You Matter, Luma, and The Mattering Effect, The Ignited Life newsletter, and the Start Mattering store are here: linktr.ee/John_R_Miles

FAQ (Frequently Asked Questions)

Is midlife really a crisis?

No. Decades of research in lifespan psychology, including the MacArthur Foundation MIDUS study, show that only a small percentage of adults experience an acute midlife crisis. For most people, happiness and life satisfaction remain stable or increase during these years.

What is a midlife crisis?

A midlife crisis is traditionally defined as a period of emotional turmoil or impulsive behavior triggered by the realization of aging and mortality. While middle age presents genuine developmental challenges, the notion that everyone undergoes a severe crisis is an exaggerated cultural trope.

Is it too late to change your life in midlife?

No. Midlife is an ideal window to re-evaluate priorities, adopt protective health habits, change careers, and pursue meaningful new goals. Accumulated life experience provides the wisdom necessary to execute lasting change.

Can your personality change during midlife?

Yes. Personality continues to evolve throughout adulthood. Navigating midlife challenges frequently strengthens emotional regulation, conscientiousness, and adaptive coping skills.

Is midlife a happy time of life?

Research shows that baseline happiness remains stable across adulthood, with many individuals experiencing heightened life satisfaction as they transition from their late fifties into their sixties and seventies.

How can I make the most of midlife?

Focus on protective physical health habits (daily activity and metabolic management), deepen reciprocal social connections, maintain an optimistic outlook on aging, and channel your energy into generative mentorship and purposeful projects.

What is generativity in midlife?

Generativity is the psychological drive to contribute to the growth, well-being, and development of younger generations through mentoring, parenting, community work, and creative endeavors.

How does midlife affect healthy aging?

Health habits established in middle age directly determine physical and cognitive outcomes in later decades. Managing blood pressure, engaging in daily exercise, and maintaining purposeful social engagement protect against cognitive decline and chronic disease in late life.

Drawing on research into counterfactual thinking and regret, Dan explains why we tend to regret actions in the short term but often regret inaction over the long term. He also examines how bureaucracy can suppress motivation, autonomy, passion, and human capital, why romantic relationships represent one of the biggest areas where people under-index on risk, and how taking a longer view can help us make decisions we are less likely to regret.

Why Does It Keep Us From Taking Chances: The Evolutionary Bias Toward Avoiding Loss

Dan begins by examining a fundamental tension in human decision-making: we are often more motivated to avoid something going wrong than we are to pursue something going right. From an evolutionary perspective, that makes sense. The downside of encountering a tiger while hunting was dramatically greater than the upside of successfully finding food. Yet the same psychological machinery can follow us into modern life, where the risks are often social, professional, emotional, or creative rather than physical.

That bias can leave individuals and organizations disproportionately focused on mistakes. The result is a culture where avoiding failure can become more important than creating progress, even when the consequences of never taking meaningful risks accumulate quietly over time.

Why We Regret the Risks We Don’t Take

One of the most powerful ideas Dan explores comes from research by Thomas Gilovich on action, inaction, and regret. In the short term, we tend to regret things we actually did. A failed romantic approach, a poor decision, or an embarrassing mistake gives us a specific event to replay and imagine differently. Inaction is harder to process because there is no single event to point toward and say, “That was my mistake.”

Over a longer time horizon, however, the frame changes. Instead of asking whether one particular decision went well, we begin asking a much larger question: What kind of life did I live? Dan describes his ongoing research on risk in precisely these terms, asking people to consider how much risk they currently take compared with how much they believe they should take to live a good life. One of the most striking gaps appears in romantic love, where people frequently report being unwilling to risk vulnerability.

In this episode, you’ll learn

• Why our evolutionary sensitivity to loss makes us more afraid of mistakes than motivated by potential progress.
• Why we tend to regret actions immediately but can regret inaction more deeply when we look back over an entire lifetime.
• How counterfactual thinking causes us to fixate on the single moment when a risky decision went badly.
• Why romantic love and vulnerable human connection represent one of the biggest gaps between the risks people take and the risks they believe they should take.
• How bureaucratic organizations can gradually shift their focus from accomplishing the mission to simply avoiding mistakes.
• Why excessive measurement can cause organizations to overlook subjective human experiences such as passion, appreciation, connection, and love.
• How bureaucracy can undermine employee motivation by communicating a lack of trust and reducing people’s sense of autonomy.
• Why efficiency can come at the expense of meaning, creativity, learning, and human capital, particularly as AI becomes more capable.
• How taking a longer time horizon can change the way you evaluate risk, discomfort, failure, and the choices that shape your life.

The Bureaucracy of Playing It Safe

Dan offers a sharp critique of organizations that become so concerned with avoiding mistakes that bureaucracy becomes a competing force inside the organization itself. Instead of serving the mission, the bureaucratic structure can begin serving its own need for consistency, documentation, control, and risk avoidance. Dan describes this as creating two competing organizations: one focused on accomplishing the mission and another focused on making sure nothing goes wrong.

The consequences extend beyond productivity. When people are treated as functions rather than human beings, their motivation can erode. Dan argues that organizations need to recognize forms of human experience that are difficult to measure objectively, including connection to a mission, appreciation, fairness, and passion.

Why Vulnerability Requires Risk: The Most Important Risks May Be the Ones We Take With Other People

Risk-taking is often associated with entrepreneurship, investing, career decisions, or physical challenges. Dan’s research suggests that we may be overlooking one of the most consequential forms of risk altogether: vulnerability in romantic relationships.

When people imagine approaching someone they are attracted to, the immediate fear is rejection, embarrassment, or ridicule. But when Dan asks people to look back over decades, the regret can take a very different form. The deeper pain may come from never pursuing the relationship, never expressing what they felt, or never discovering what might have happened if they had been willing to take the risk.

This reframes vulnerability. The question is not simply whether a particular risk will work out. It is whether avoiding meaningful risks altogether could prevent us from experiencing the relationships, growth, and connection we ultimately value most.

How to Make Decisions You Won’t Regret

Dan’s perspective ultimately points toward a different way of making decisions. Instead of evaluating every choice exclusively through the lens of immediate discomfort, embarrassment, or potential failure, consider how the decision might look from a much longer horizon.

That means distinguishing discomfort from genuine danger, recognizing that mistakes can contain learning and human development, and asking whether today’s attempt could contribute to a life you will value years from now. Dan is also working on a book about risk, motivated by the idea that both individuals and organizations need to understand what prevents them from taking more meaningful risks.

The Ideas Behind the Conversation

While this conversation does not center on a single book, it connects naturally to several major threads in Dan Ariely’s body of work. John references Predictably Irrational and Misbelief when describing how Dan has continued to investigate the ways human beings move away from choices that could improve their lives.

Predictably Irrational examines the hidden forces that shape our decisions, while The Upside of Irrationality explores how seemingly irrational behaviors can sometimes produce unexpected benefits in our lives and workplaces. Dan’s official bibliography also includes Payoff, The (Honest) Truth About Dishonesty, Dollars and Sense, Irrationally Yours, Amazing Decisions, and Misbelief.

The conversation’s discussion of AI also echoes a recurring question across Dan’s work: what happens when we optimize for a measurable outcome while losing sight of the human experience underneath it? Dan describes how writing a book involves mistakes, false starts, experimentation, and learning that may be invisible in the finished product. He questions what happens to our human capital and creative development if technology allows us to eliminate that messy process in the name of efficiency.

The Center for Advanced Bureaucracy: Dan’s Fight Against Systems That Forget the Human

During the conversation, Dan points listeners toward the Center for Advanced Bureaucracy, a project he created to examine what happens when organizational systems become increasingly focused on rules, procedures, and avoiding mistakes rather than serving the larger mission.

Dan describes the project as his place to “complain about bureaucracy,” but the underlying argument is more substantive. His concern is that bureaucratic sub-organizations can gradually develop goals that conflict with the goals of the organization itself. They can encourage organizations to take fewer risks, innovate less, and prioritize administrative consistency over human motivation and meaningful outcomes.

The project therefore connects directly to one of the central ideas in this conversation: when the avoidance of mistakes becomes the dominant objective, organizations can end up protecting themselves from failure while simultaneously protecting themselves from progress.

How to Overcome the Fear of Regret in Your Decision-Making

To move past the fear of taking risks and avoid long-term missed opportunities, apply these behavioral economics insights:

• Extend your time horizon: When facing a tough choice, look past the immediate discomfort. Ask yourself: Twenty years from now, will I care about the temporary embarrassment of trying, or will I carry the regret of inaction?
• Separate discomfort from danger: Emotional awkwardness and social uncertainty are uncomfortable, but they are not fatal.
• Account for the hidden cost of passivity: Doing nothing is not neutral. Calculate what playing it safe will cost your self-respect and growth over the next five years.
• Choose meaningful friction over effortless efficiency: Real meaning and purpose come from the complex, messy processes that require effort, vulnerability, and genuine personal investment.

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About Today’s Guest, Dan Ariely

Dan Ariely is a behavioral economist and Professor of Business Administration at Duke University whose research explores the surprising ways people make decisions, behave irrationally, and respond to incentives, social forces, and organizational systems. He is the author of bestselling books including Predictably Irrational, The Upside of Irrationality, The (Honest) Truth About Dishonesty, Payoff, Dollars and Sense, and Misbelief. His work is known for translating behavioral economics into accessible insights about everyday decisions, motivation, money, relationships, and human behavior.

Ariely is also a founding member of Duke’s Center for Advanced Hindsight. More recently, he created the Center for Advanced Bureaucracy, an advocacy and educational project examining how bureaucratic systems can become self-serving, discourage risk-taking and innovation, and undermine employee motivation and organizational effectiveness.

What If You Could Eliminate REGRET from Your Life? | Dan Ariely Explains

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👉 All episode links, my books You Matter, Luma, and The Mattering Effect, The Ignited Life newsletter, and the Start Mattering store are here: linktr.ee/John_R_Miles

FAQ (Frequently Asked Questions)

What is fear of regret?

It’s the anticipation that a decision could lead to painful disappointment, embarrassment, or the feeling that we made the wrong choice. In the context of this conversation, Dan Ariely explores how that fear can encourage people to avoid meaningful risks even when taking those risks could ultimately contribute to a better life.

Why do we regret the risks we don’t take?

Dan explains that short-term and long-term regret can operate differently. In the short term, we tend to focus on actions that went badly because they provide a specific event we can replay through counterfactual thinking. Over time, however, we shift toward evaluating our lives more broadly, which can make the opportunities, relationships, and experiences we never pursued feel increasingly significant.

Why are people afraid of taking risks?

Dan connects risk aversion to our evolutionary tendency to focus heavily on negative outcomes. The potential cost of being wrong can feel more psychologically powerful than the potential benefit of being right, making mistakes feel more threatening than missed opportunities.

What area of life do people take the least risk in?

According to Dan’s research discussed in this episode, romantic love is one of the areas where people report the largest gap between the amount of risk they currently take and the amount they believe they should take. The central obstacle is vulnerability and the fear of rejection.

How does bureaucracy reduce employee motivation?

Dan argues that bureaucracy can communicate a lack of trust. When employees are forced to follow increasingly rigid procedures and are treated primarily as functions within a system, they can lose their sense of autonomy, connection, and passion for the work. The result can be an organization that technically operates according to its rules while becoming increasingly disconnected from its human mission.

What is the Center for Advanced Bureaucracy?

The Center for Advanced Bureaucracy is Dan Ariely’s project examining the growth and consequences of bureaucratic systems. Dan created it to explore how bureaucratic structures can develop goals that differ from an organization’s broader mission and can encourage less risk-taking, less innovation, and weaker employee motivation.

What does Dan Ariely say about AI and human creativity?

Dan is concerned that the pursuit of efficiency can cause us to overlook the value of the process through which people develop knowledge, creativity, expertise, and human capital. He points to his own experience writing books, where mistakes and false starts were part of the learning process, and asks what could be lost if technology eliminates too much of that process in pursuit of speed.

How can we make decisions we are less likely to regret?

A central implication of Dan’s perspective is to widen the time horizon through which we evaluate decisions. Instead of asking only whether something will feel uncomfortable or risky today, consider what the choice may mean when viewed across years or decades. That longer perspective can reveal when avoiding discomfort today may create a much larger regret tomorrow.

In this episode of Passion Struck, Josh sits down with John R. Miles for a candid conversation about redefining success, fatherhood, identity, health, environment, and the kind of legacy that survives long after a career has ended. Josh reflects on growing up in North Dakota, building a life around his Minnesota property, spending years inside Hollywood, and gradually realizing that the memories he creates with his family matter more to him than the material symbols of achievement.

The conversation moves from the quiet roads leading to Josh’s cabin to the pressures of Hollywood, from parenting in an age of technology to the insecurities that can exist beneath public success. Along the way, Josh shares why being present for his children has become one of his most important measures of a successful life, and why staying curious about himself may be just as important as continuing to grow professionally.

The Shift From Proving Yourself to Redefining Success

One of the most revealing parts of Josh’s story is that his struggle with achievement did not disappear simply because he became successful. In fact, success could sometimes intensify the feeling that there was still something left to prove. Josh describes having measured himself for years by what he accomplished while carrying an underlying belief that he needed to prove himself to other people.

That realization creates an important distinction between achievement and fulfillment. Achievement can tell us what we have accumulated, accomplished, or been recognized for. Fulfillment asks a different question: what are those achievements making possible in the life we are actually living?

For Josh, the answer increasingly centers on family rituals, friendships, time together, and the legacy he is creating for his children and grandchildren. He is not rejecting ambition or pretending that material success has no value. Instead, he is putting those things in their proper place. Money and material possessions can become tools for building a meaningful life, but they are not the life itself.

What Happens When You Step Outside the Noise

Josh’s relationship with North Dakota and his Minnesota cabin offers a fascinating example of how environment can shape identity. After years of living and working in Hollywood, he keeps returning to places where the pace is slower, the responsibilities are tangible, and life feels more immediate.

He describes the experience of turning off the highway, driving down a dirt road through the woods, and eventually seeing the lake and the little red cabin. What changes is not simply the scenery. His attention changes. The endless stream of professional concerns becomes less important because the world in front of him asks for something simpler: make sure everyone is fed, keep the place working, spend time together, and be present.

That environment also gives Josh a different kind of work. Clearing land, fixing equipment, operating machinery, and building things provide visible evidence of effort. The work has a beginning, a process, and a result. In a career where outcomes can depend on casting decisions, public opinion, and forces outside his control, there is something psychologically grounding about picking up a tool and making something function again.

Fatherhood, Technology, and the Meaning of Being There

The conversation becomes especially personal when Josh talks about his children. He acknowledges that he works a lot and that being present is an ongoing challenge, particularly with an older child whose life and needs are changing rapidly. His goal is not to create some idealized version of fatherhood. It is to make sure his children remember him as someone who was there.

That idea changes the meaning of success considerably. A child is unlikely to understand the significance of a career in the same way the adult world does. They may not remember the movie, the premiere, or the professional accomplishment. They remember who showed up, who listened, who played, who took them somewhere, and who was emotionally available when they needed them.

Josh is also raising his children between very different worlds. North Dakota and Minnesota offer a slower rhythm, greater access to nature, and a childhood experience that feels more insulated from the pressures surrounding Hollywood. He wants his children to have room to explore, build, swim, fish, and simply experience being children.

That tension between modern technology and timeless human needs becomes an important parenting lesson: the tools may change dramatically, but the need for attention, connection, and presence remains remarkably stable.

Building Something That Outlives You

Josh’s property has gradually become more than a retreat. It represents two decades of accumulated effort and a physical expression of the life he wants his family to share.

The significance lies as much in the process as in the finished place. Each project creates a small sense of accomplishment, and those accomplishments eventually become something larger. The cabin, land, traditions, and memories become part of a story that could continue beyond Josh’s lifetime.

That is why his definition of success has shifted toward legacy. He wants his children to inherit more than possessions. He wants them to inherit a place, traditions, stories, and a sense of connection that they can eventually pass to their own children.

That distinction feels deeply human. A material possession ends with its utility. A family ritual can continue for generations.

In this episode, you’ll learn

• How Josh Duhamel’s definition of success changed from achievement and external validation toward family, presence, memories, and legacy.
• Why highly accomplished people can continue to feel as though they have something to prove even after achieving significant professional success.
• Why being present for his children has become one of Josh’s most important measures of a successful life.
• How parenting in a technologically saturated world still comes down to timeless human needs: attention, connection, and presence.
• Why Josh believes family rituals and shared memories can become more meaningful than material possessions.
• How caring about other people’s opinions once prevented Josh from living his fullest self.
• Why staying curious about yourself may be one of the most important forms of personal growth.
• How Josh’s experience with yoga changed his perspective on physical and mental wellness.
• Why Josh became willing to speak publicly about subjects that many men traditionally avoid discussing.
• How his personal health journey contributed to the creation of Gatlan and a broader conversation about proactive healthcare.
• How redefining success can change the way you think about your career, relationships, health, environment, and legacy.

The Cost of Living for Other People’s Approval

Josh also speaks openly about a less visible part of success: the psychological cost of caring too much about how other people perceive you.

He describes a period in which concern about other people’s opinions prevented him from fully living as himself. With age, he has become less interested in maintaining an image and more willing to acknowledge his insecurities, imperfections, and ongoing growth. He describes himself as a work in progress and says that staying curious about himself is part of getting older well.

That admission matters because public success can create a strange psychological trap. The more visible you become, the more incentive you may have to protect the image that others have constructed around you. Yet protecting an image can eventually become a barrier to knowing yourself.

Josh’s story points toward a quieter form of freedom: allowing yourself to become less concerned with performing a version of yourself for other people and more interested in discovering who you actually are.

A Different Conversation About Getting Older and Staying Well

Josh’s approach to health emerges from the same larger question about how he wants to live. As he got older and became a father, his motivation shifted from simply maintaining his professional performance to wanting enough physical and mental capacity to remain active and present for the long term.

That led him to explore different approaches to health and eventually to co-founding Gatlan, a company focused on personalized healthcare, biomarker testing, and physician-guided approaches to health optimization. In the interview, Josh explains that his experiences eventually convinced him to talk openly about subjects many men are uncomfortable discussing.

The broader lesson is about becoming more proactive with age. Josh describes health as something he wants to understand rather than simply react to, and he also discusses practices such as yoga. He discovered yoga almost accidentally while filming a Transformers movie and was surprised by both the physical benefits and the mental clarity he experienced afterward.

For Josh, personal growth increasingly means being willing to examine different parts of himself, including his physical health, mental well-being, habits, and assumptions about what men are supposed to talk about.

Proactive Longevity and Men’s Health: Gatlan

Josh’s conversation about Gatlan begins with a deeply personal realization. As he entered his forties and later became a father again, he became increasingly aware that maintaining the energy and health he wanted for his career was also connected to something much more important: having the capacity to be there for his family for as long as possible.

He describes researching his own health, exploring hormone and longevity-related treatments, and eventually being approached about helping build a company around that experience. What initially made him hesitant was the vulnerability of publicly discussing something that many men would rather keep private. Eventually, he decided that openness was precisely the point. He wanted to make these conversations easier for other men to have.

During the interview, Josh also talks about Gatlan’s effort to support veterans, first responders, nurses, and teachers, groups he believes often carry extraordinary physical and emotional burdens without receiving enough recognition.

The important context is that Josh is sharing his personal experience and his perspective as a co-founder. His discussion of specific treatments should be understood in that context rather than as individualized medical advice.

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The Legacy We Leave in Other People

Josh Duhamel’s story offers a powerful way to think about the deeper question at the heart of John R. Miles’ upcoming book, The Mattering Effect: what ultimately makes a life meaningful is often less about what we accomplish and more about what our presence communicates to the people we love.

Josh has spent much of his life in an environment where achievement is highly visible. Movies, television, money, recognition, and professional success provide obvious markers by which a person can measure progress. Yet as he reflects on the life he is building for his children, his definition of success has become much more personal. He talks about the memories created at his cabin, the family rituals that can be carried forward, and his hope that his children will one day remember something far more important than his career: that their dad was there.

That idea reaches directly into the question of mattering. People want to know that their lives have significance, but significance is rarely created through achievement alone. It is experienced through relationships, through being known, through knowing that our presence has made a difference in someone else’s life. Josh’s story suggests that one of the most enduring forms of success may be the kind that cannot be displayed publicly at all: becoming someone whose presence makes other people feel loved, remembered, and important.

In that sense, the legacy we leave may have less to do with what carries our name and more to do with what continues inside the people we have cared for. The memories Josh is creating with his children are not simply moments he hopes they will remember. They are experiences through which they learn what family means, what belonging feels like, and what it means to have someone consistently show up for you. That is where achievement becomes something deeper: not a measure of what we accumulated, but an expression of who we became for the people who mattered most.

Actionable Takeaways for Redefining Success in Your Own Life

Real transformation begins when you stop looking for external trophies and focus on becoming someone who consistently generates value, connection, and presence for the people around you.

1. Audit your scorecard: Are you grading your life by public applause or private peace?
2. Create spaces for presence: Build routines or physical spaces where your nervous system can unwind, and you can engage with loved ones without digital distraction.
3. Take ownership of your health: Get your blood tested, address underlying hormonal or metabolic deficiencies, and treat physical energy as a non-negotiable asset.
4. Prioritize shared memories: Invest your financial and emotional resources into shared rituals, family traditions, and experiences that outlast material possessions.

About Today’s Guest, Josh Duhamel

Josh Duhamel is an acclaimed actor, director, producer, and entrepreneur whose career has spanned film and television. He became widely known through roles in All My Children and Las Vegas before appearing in major films including the Transformers franchise, Safe Haven, Life as We Know It, New Year’s Eve, You’re Not You, Love, Simon, and other projects. He has continued expanding his work beyond acting through entrepreneurship, including his involvement with Gatlan and Dakota Media.

What makes this conversation particularly revealing, however, is the distinction between Josh’s public résumé and the private values he describes. Beneath the career achievements is someone increasingly interested in family, nature, craftsmanship, health, curiosity, and creating a life his children will remember with affection.

How to Stop Proving Yourself & Start Living for Yourself

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👉 All episode links, my books You Matter, Luma, and The Mattering Effect, The Ignited Life newsletter, and the Start Mattering store are here: linktr.ee/John_R_Miles

FAQ (Frequently Asked Questions)

What does Josh Duhamel consider a successful life?

Josh describes success as the memories he creates with his family, the friendships and traditions built around those experiences, and the legacy he is leaving for his children and grandchildren. Material possessions still have value to him, but he increasingly sees them as tools that can help create meaningful experiences rather than as the final measure of a successful life.

How has His definition of success changed?

Earlier in his career, Josh says he measured himself heavily through achievement and carried a persistent feeling that he had something to prove. Over time, his priorities have moved toward presence, family, health, meaningful work, shared memories, and legacy.

Why does Josh Duhamel value North Dakota and Minnesota so much?

Josh grew up in North Dakota and describes both North Dakota and his Minnesota cabin as places where life feels slower, more grounded, and centered around family. He believes these environments give his children an opportunity to experience nature and a less accelerated childhood away from some of the pressures surrounding Hollywood.

What does Josh want his children to remember about him?

Josh says his greatest goal is for his children to remember that their dad was there. He recognizes that his work can require long periods away from home, which makes his effort to create quality time and intentional presence even more important.

What is Gatlan and why did Josh Duhamel become involved?

Josh discusses Gatlan as a personalized healthcare company focused on areas including biomarker testing and physician-guided health optimization. His involvement grew from his own interest in maintaining his health and energy as he aged, combined with his desire to make conversations about men’s health less uncomfortable and more accessible.

What is the biggest lesson from Josh’s story?

The deeper lesson is that success can change meaning as life changes. Career achievement can open doors, but relationships, presence, health, family traditions, and shared memories determine what those opportunities ultimately become. Josh’s story is an invitation to examine the scorecard we are using and ask whether it reflects the life we genuinely want to remember.

At the center of that system are microglial cells, the brain’s innate immune cells. Perlmutter explains how these cells help nurture neurons, maintain synapses, and support the blood-brain barrier when the body is metabolically healthy, yet can become destructive when challenged by chronic inflammation and metabolic dysfunction. His larger argument is both scientific and deeply personal: the choices we make today can influence the conditions under which our brains age tomorrow.

That idea gives the conversation its throughline. Rather than treating brain health as something to think about only after memory begins to fade, Perlmutter argues for a preventive approach that asks a more useful question: what can we do now to create a better environment for the brain we will depend on later?

Why Microglia May Change How We Understand Brain Health

One of the most memorable ideas in Perlmutter’s new book is his description of microglia as having an “evil twin.” The same cells that can nurture synapses, support neurons, and help repair the brain can shift into a destructive state when challenged by inflammation or metabolic problems.

Perlmutter sees this shift as a common mechanism across a surprisingly broad range of neurological and psychiatric conditions. In the interview, he connects this framework to Alzheimer’s, Parkinson’s, multiple sclerosis, long COVID, PTSD, and major depressive disorder. The important question, therefore, becomes how we keep these cells in their supportive configuration and create conditions that allow the brain’s defenders to remain on our side.

The significance of this idea extends beyond any single disease. It suggests that different experiences and diagnoses may share biological pathways that are influenced by the same underlying environment.

When Brain Defenders Become Brain Destroyers

A calendar can tell you where your hours are scheduled. It cannot tell you how much attention you are spending inside those hours.

Neal’s own Lake Michigan story illustrates the distinction. While vacationing with his young children, he received a request from a board member for a brief call about an acquisition opportunity he already knew was unlikely to materialize. Intellectually, he understood the call had little value. Emotionally, he felt compelled to accept it because he feared disappointing the board member or being left out.

The fifteen-minute call became an hour and forty-five minutes. By the time Neal finished, his children had already lost interest in the afternoon activity he had planned with them. The important lesson came afterward. The board member had done nothing wrong. Neal recognized that the decision belonged to him. He had let his own fear system decide where his attention went.

As he explains in the interview, “I did not manage myself.”

That realization became a defining moment because it changed the question. Instead of asking how to fit more into the day, Neal began asking how he could become better at managing himself.

The Hidden Relationship Between Metabolic Health and Brain Health

Perlmutter’s argument repeatedly returns to metabolism because microglial behavior reflects what is happening throughout the body. When blood sugar, insulin function, inflammation, blood pressure, and other metabolic factors are poorly regulated, the environment surrounding these immune cells changes as well.

That helps explain why brain health cannot be reduced to a single supplement, exercise routine, or cognitive exercise. The brain receives information from the entire organism. Sleep changes metabolism. Exercise creates chemical signals from muscle that affect the brain. Diet influences inflammation. Oral health connects to systemic health. Alcohol can affect sleep and the gut microbiome. Each factor becomes part of a larger biological conversation.

This is also where Perlmutter’s message becomes empowering. He describes these influences as opportunities to shape what happens inside the brain rather than simply waiting for neurological symptoms to appear.

Why Prevention Changes the Question We Ask About Alzheimer’s

A particularly important shift in the conversation is the move from asking what happens after cognitive decline begins to asking why it happened in the first place.

Perlmutter recalls his own father, a brilliant brain surgeon who developed Alzheimer’s, while John shares the experience of watching his grandfather suffer dementia after vascular problems and a series of mini-strokes. Those experiences add a human dimension to the scientific discussion. Neither speaker is approaching dementia as an abstract medical problem. They have seen what cognitive decline does to families.

That shared experience leads Perlmutter to emphasize the importance of asking “why.” Understanding the causes of disease creates the possibility of prevention and helps researchers identify better therapeutic approaches. His focus is therefore less on accepting cognitive decline as an inevitable endpoint and more on understanding the conditions that contribute to it.

In this episode, you’ll learn

• How microglial cells function as the brain’s innate immune system and why they are becoming central to modern neurological research.
• Why microglia can shift from supporting neurons and synapses to becoming destructive when challenged by metabolic dysfunction and inflammation.
• How metabolic health and brain health are connected through blood sugar, insulin function, inflammation, blood pressure, and other signals.
• Why sleep can influence inflammation and metabolic function with surprising speed.
• How exercise creates a muscle-brain connection through myokines and why consistent movement matters for cognitive health.
• Why oral health, the gut microbiome, alcohol, ultra-processed foods, and sedentary behavior belong in a broader conversation about brain health.
• What traumatic brain injury can teach us about microglial activation, metabolism, inflammation, and recovery.
• What emerging research into GLP-1 medications may reveal about metabolic approaches to neurological disease.
• How to think about brain health as a long-term practice rather than something to address after symptoms appear.

What Brain Injury Can Teach Us About Recovery

The conversation takes an especially interesting turn when Perlmutter discusses traumatic brain injury. Microglia initially respond to injury in a helpful way by clearing debris and restoring health. The difficulty arises when they remain activated for too long and fail to return to their healing state.

Perlmutter explains that metabolic dysfunction can make that transition more difficult. He discusses the relationship between brain injury, blood sugar regulation, inflammation, mitochondrial function, and the gut-brain connection, suggesting that recovery involves creating conditions that help microglia return to their supportive role.

The discussion also offers a new perspective on the relationship between traumatic brain injury and PTSD. Perlmutter describes research using TSPO PET scans to examine microglial activation and discusses how similar biological mechanisms may appear across physical trauma, psychological trauma, neurodegenerative disease, and mood disorders.

Why Good Science Sometimes Takes Time to Change Medicine

Perlmutter and John also confront an uncomfortable question: if the evidence around lifestyle and brain health continues to develop, why does clinical practice change so slowly?

Perlmutter points to structural realities within medicine. The conventional clinical model often revolves around short appointments, documentation, and prescriptions, while meaningful lifestyle counseling requires time. He also acknowledges a gap in medical education, explaining that he personally received no formal nutrition training during medical school.

That observation matters because prevention requires a different kind of medical conversation. It asks clinicians to spend time understanding how someone eats, sleeps, moves, manages stress, and lives outside the examination room. It also asks patients to recognize that their health is shaped between appointments, through thousands of ordinary decisions.

The Idea Behind Brain Defenders

When John begins the interview, he is holding Perlmutter’s new book, Brain Defenders, and describes it as something that feels larger than simply the next installment in a long career. He sees it as a culmination of decades of research and clinical experience. That observation opens the conversation in a revealing way because Perlmutter agrees that the writing process changed how he understood his own work.

He explains that earlier books and areas of research had examined different pieces of the puzzle: the effects of highly processed carbohydrates, the microbiome and brain health, uric acid, relationships, metabolism, and other influences on neurological function. As those strands accumulated over the years, they began converging around the brain’s immune system.

That realization gave him a framework capable of connecting ideas that had previously appeared separate. The book became an attempt to explain why so many different lifestyle and environmental factors can influence the same biological system, and why seemingly ordinary choices around food, exercise, sleep, relationships, and metabolism can matter for the brain’s long-term trajectory.

The timing of the book also gives the conversation a sense of urgency. Perlmutter notes that Brain Defenders is being published internationally, reflecting his view that the problem extends beyond any one country. As Western lifestyle patterns spread, he sees the accompanying rise in Alzheimer’s as part of a broader global challenge.

The Future of Metabolic Brain Medicine

Toward the end of the conversation, Perlmutter turns toward emerging treatments, including GLP-1 medications. His position is deliberately open to the evidence. He discusses promising findings in Parkinson’s disease while also noting that oral semaglutide trials in Alzheimer’s disease did not produce meaningful cognitive improvement and that more research is needed.

His broader point is that future therapies may need to address the underlying biological processes driving neurological disease rather than simply managing the symptoms those processes produce. He describes this through a memorable metaphor: “We’ve never targeted the underlying fire. We’ve only treated the smoke.”

That perspective also reveals an important quality in Perlmutter’s approach to science. He describes his own program as something that should continue changing as the evidence changes. The goal is not loyalty to a particular intervention. The goal is finding approaches that genuinely help people while maintaining an appropriate understanding of their risks and limitations.

What Can You Do Today to Protect Your Brain?

You do not need to overhaul your entire life overnight. Start with a single on-ramp:

1. Pick One Anchor Habit: Whether it is committing to consistent sleep hygiene, removing ultra-processed foods, walking thirty minutes a day, or eliminating alcohol, improving one area naturally creates momentum across the others.
2. Test, Don’t Guess: Work with your healthcare provider to test your vitamin D, intracellular magnesium, homocysteine, hs-CRP (inflammation), and fasting insulin levels.
3. Prioritize Oral Health: Brush, floss, and maintain regular dental cleanings to block periodontal bacteria from entering the bloodstream.
4. Shift from “Finding Time” to “Making Time”: Protect your exercise and recovery windows as non-negotiable investments in your cognitive longevity.

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About Today’s Guest, David Perlmutter

Dr. David Perlmutter is a board-certified neurologist, Fellow of the American College of Nutrition, and six-time New York Times bestselling author. He has spent decades exploring the relationship between nutrition, metabolism, inflammation, and neurological health, and his work has helped bring preventive approaches to brain health into the broader public conversation.

He is the author of Grain Brain, Brain Maker, The Grain Brain Cookbook, The Grain Brain Whole Life Plan, Brain Wash, and Drop Acid. His latest book, Brain Defenders: Harness the Power of Your Immune Cells to Protect Your Brain for Life, brings together decades of research and clinical experience around the role of the brain’s immune system and microglial cells. In this conversation, he explains how the different threads of his career eventually converged around a common question: what determines whether the brain’s immune cells protect us or contribute to neurological decline?

Can You Change Your Brain’s DESTINY? Dr. David Perlmutter Explains

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FAQ (Frequently Asked Questions)

What are microglia and why are they important for brain health?

Microglia are the brain’s innate immune cells. Perlmutter explains that they make up about 10 percent of the cells in the brain and play important roles in nurturing neurons and synapses and supporting healthy brain function. Their behavior is influenced by metabolic conditions throughout the body, making them an important connection between systemic health and brain health.

How does metabolism affect the brain?

Perlmutter describes microglial metabolism as closely reflecting the body’s metabolic state. Blood sugar, insulin function, inflammation, body weight, and blood pressure can all influence whether microglia remain supportive or become more destructive. This is why he sees metabolic health as an important part of protecting long-term brain function.

Can lifestyle choices influence brain health?

Perlmutter argues that they can. He discusses exercise, sleep, diet, alcohol, oral health, metabolic function, and other lifestyle factors as influences that can shape the environment in which the brain’s immune cells operate. His emphasis is on the cumulative effect of these choices rather than one isolated intervention.

Why is sleep important for brain health?

Perlmutter explains that even one night of non-restorative sleep can increase inflammatory markers, raise blood sugar, and reduce insulin functionality. He also connects sleep to our ability to make good decisions the following day, making sleep relevant to both immediate cognitive performance and longer-term brain health.

What is the connection between exercise and brain health?

Perlmutter discusses the muscle-brain connection, explaining that exercising muscles produce myokines that can travel to the brain and influence metabolism. He connects improved brain metabolism with healthier microglial function and emphasizes that even exercising a couple of days a week can provide meaningful benefits.

How are traumatic brain injury and PTSD connected?

Perlmutter discusses evidence that both physical and psychological trauma can involve sustained microglial activation. In the interview, he describes TSPO PET scanning as a research tool that can identify activation of these brain immune cells and explains how this framework may help researchers understand similarities across traumatic brain injury, PTSD, and other neurological and psychiatric conditions.

What is the main idea behind Brain Defenders?

The central idea is that the brain’s immune system plays a pivotal role in determining neurological health. Perlmutter’s book brings together decades of work on metabolism, nutrition, the microbiome, uric acid, exercise, sleep, and other influences under the framework of microglial function. The goal is to understand what helps keep these cells supportive so they can continue defending the brain.

Does Dr. Perlmutter believe brain health science is settled?

Quite the opposite. One of the more interesting aspects of the conversation is his willingness to let his recommendations evolve with emerging evidence. His discussion of GLP-1 medications illustrates this approach: he sees promising signals in some areas, acknowledges disappointing results in others, and emphasizes the need for additional research before emerging treatments become part of the mainstream toolbox.