S2 Ep1848: PASSION STRUCK John R. Miles: Leslie John on The Science of Opening Up

The Science of Opening Up: Why Under Sharing Is More Costly Than Oversharing with Leslie JohnWhat if the real reason you regret conversations is not because you said too much, but because you said too little? In this episode, John R. Miles  explore the science of opening up with Leslie John, a leading behavioral scientist at Harvard Business School. Her research reveals that we fixate on the risks of oversharing while overlooking the hidden cost of under sharing. From missed opportunities in love to diminished trust at work, silence carries consequences that are often invisible but deeply impactful. Through powerful stories, including the reunion of John and Grace after twenty years apart, and rigorous research on self-disclosure, stress, and psychological safety, Leslie shows how revealing wisely strengthens connection, influence, and well-being.The TLI Problem: Why Silence Is Not NeutralWe tend to evaluate conversations through the lens of embarrassment. The fear of a disclosure hangover makes us cautious. Yet Leslie’s work demonstrates that silence creates its own risks. Too Little Information, or TLI, leads to missed opportunities for intimacy, trust, and growth. Research on regret consistently shows that in the long run we regret what we did not say far more than what we did. These missed moments accumulate quietly. A reassurance never voiced. A frustration never named. A truth never shared. Over time, those omissions shape relationships and outcomes more than we realize.The Physics Of Connection: Social Risk And Mutual TrustSelf-disclosure works because it involves social risk. When you share something personal, you relinquish control and signal trust. That act invites trust in return. This mutual exchange forms the foundation of deep friendships, strong partnerships, and meaningful collaboration. Leslie explains that vulnerability is not about emotional dumping. It is about calibrated revealing. When done thoughtfully, it strengthens bonds and increases perceived authenticity. People feel closer to those who allow themselves to be known.Leadership And Psychological Safety At WorkIn professional environments, many people feel pressure to project confidence and composure. Leslie’s research shows that when leaders practice metered vulnerability, employees report higher trust and motivation. Naming emotions such as frustration in a meeting can unlock clarity and momentum. Psychological safety is strengthened when leaders go first. Eye contact, openness, and appropriate self-disclosure create an environment where others feel safe to contribute. Performance improves when people are not preoccupied with concealing their thoughts and feelings.Key Highlights from this Episode Why Too Little Information often causes more long-term regret than Too Much Information How the disclosure hangover skews our future communication decisions The science behind why vulnerability builds trust The physiological cost of suppressing emotions Why couples misread each other more than they realize How leaders can increase influence through measured openness The connection between self-disclosure and reduced loneliness Leslie John is the James E. Burke Professor of Business Administration at Harvard Business School and a leading expert on self-disclosure and decision-making. Her award-winning research has been featured in The New York Times, The Wall Street Journal, and The Economist.  A Canadian-born, professionally trained ballet dancer, she now lives in Boston with her husband and two sons. Through her scholarship and writing, she teaches leaders and individuals how to say what matters. To learn more about Leslie, visit her website.Explore More: The Ignited Life Newsletter  If today’s episode sparked something in you, you’ll love The Ignited Life—our free Substack newsletter created to fuel your growth between episodes. Join thousands of high-performers, purpose-seekers, and change-makers who are shifting from autopilot to alignment—one intentional insight at a time. Each edition delivers fresh insights on intentional living, resilience, and emotional mastery Practical tools like the L.E.N.S. method and micro-habits to ignite change Behind-the-scenes reflections from Passion Struck episodes Guest wisdom distilled into real-life applications Curated resources, quotes, and frameworks to help you live like you matter Want to learn the 12 philosophies that the most successful people use to create a limitless life? Order John R. Miles’s new book, Passion Struck: Twelve Powerful Principles to Unlock Your Purpose and Ignite Your Most Intentional Life. Learn More and Connect👉 All episode links, my books You Matter, Luma, and Passion Struck, The Ignited Life newsletter, and the Start Mattering store are here: linktr.ee/John_R_Miles🛍️ StartMattering.com | 🔗 TheIgnitedLife.net  #johnrmiles #passionstruck #livelifebetter #author #tampabay #radio #radiostpete #theignitedlife  #startmattering #thematterverse #lesliejohnPassion Struck is the human performance company transforming how people work, lead, and live by turning mattering into measurable gains in engagement, retention, innovation, and culture. We are building a world where every child grows up knowing they are seen and valued, and every adult lives like they are, too.Quick links Home Book Podcast Videos Blog Store John R. 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