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Episode: 392

Harvard Business School Professor: This One Research Study Will Change Your Life and Career

with Professor Leslie K. John

Today's episode with Harvard Business School Professor Leslie John is going to completely change the way you think about every conversation you've been too afraid to have.

In today’s episode, you will learn the surprising science of honesty, vulnerability, and human connection. 

Harvard Business School’s Dr. Leslie K. John, a behavioral scientist who has spent decades studying honesty, trust, privacy, regret, and decision-making, has discovered why the things you don't say are quietly hurting your health, your relationships, and your career – and exactly what to do about it.

For years, the advice has been: don't overshare, at work or with friends. Keep things private. But decades of Harvard research say that advice is backwards. 

Dr. John's findings are shocking, and reveal that the real problem, the one deepening loneliness and costing you the career and connections you want, is undersharing.

If you've ever held something back because you didn't want to make things awkward, said "I'm fine" when you weren't, or wished your relationships felt deeper and more honest, this episode will change the way you communicate forever.

Listen on:

A life of undersharing is a life of missed opportunities.

Professor Leslie K. John

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Key takeaways

  1. You keep telling yourself silence is maturity, but what you’re really doing is hiding, and that fear of judgment is quietly eroding trust, connection, and your ability to be truly known by others.

  2. You think the risk is oversharing, but the real danger is withholding, because when you avoid the truth, people instinctively distrust you, assume the worst, and feel less safe being open with you.

  3. When you choose to reveal something real, even if it’s uncomfortable, you signal trust, and that act makes others trust you more, deepening relationships, increasing influence, and strengthening your sense of belonging.

  4. Every time you don’t say what you feel, you carry another unsaid thought, and that growing weight creates stress, blocks support, fuels rumination, and makes life feel like it’s all on your shoulders.

  5. You can talk all day and still be closed, because being talkative is not the same as being open, and real connection only happens when you share what actually matters, not just what fills the space.

Guests Appearing in this Episode

Professor Leslie K. John

Dr. Leslie John is a Harvard Business School professor and behavioral scientist who studies honesty, trust, and how revealing shapes relationships and decisions.

  • Revealing: The Underrated Power of Oversharing

    We all know the feeling: that gut-wrenching post-conversation replay, cringing at how much we just revealed. We live in fear of saying too much, so we keep our mouths shut, guard our emotions, and lock away our most personal thoughts. But what if we’ve been worrying about the wrong thing?


    Drawing on over a decade of research and real-life stories, behavioral scientist Leslie John explores why we hesitate to open up, when sharing really does backfire, and how to strike a balance between too much and too little.


    Learning to be more vulnerable and open at work and at home can unlock some of life’s richest rewards: deeper friendships, stronger professional relationships, greater well-being, and, yes, even love. Revealing is a road map for making smarter, bolder, and ultimately more satisfying decisions about just how much you want to share and why.

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