Why You're Afraid to Share (And What It's Costing You) | Leslie John

What It Covers

Harvard Business School professor Leslie John joins Lewis Howes to examine why people chronically undershare in relationships, presenting research showing couples married an average of 12 years misread each other's thoughts and feelings 80% of the time. John connects emotional vocabulary deficits, mind-reading expectations, and disclosure avoidance to relationship breakdown, divorce, and end-of-life regret.

Key Questions Answered

• •The 80% Misreading Problem: Couples married an average of 12 years accurately read their partner's thoughts and feelings only 20% of the time in controlled lab studies. The core issue is that confidence in knowing a partner grows faster than actual knowledge does. This gap causes people to stop asking questions and stop sharing, which accelerates emotional distance and relationship deterioration over time.
• •Mind-Reading Expectations Scale: Mind-reading expectation is a measurable, stable personality trait — some people score significantly higher than others. High scorers implicitly believe partners should detect their emotional state without verbal communication, leading to stonewalling when partners inevitably fail. A self-assessment scale is available at professorlesliejohn.com. Simply becoming aware of a high score produces measurable behavior change and relationship quality improvement.
• •TLI vs. TMI Framework: Most people fear oversharing (TMI — too much information), but research consistently identifies undersharing (TLI — too little information) as the larger relationship threat. The majority of daily disclosure decisions default to silence without conscious evaluation. Feelings represent the most chronically undershared category. Reframing silence as an active choice — rather than a neutral default — opens space to share more deliberately and strategically.
• •Disclosure Flexibility as a Skill: The most effective communicators are not consistently open or consistently guarded — they move fluidly between full vulnerability and strategic reserve depending on context. Sharing anxiety with a boss before a presentation differs entirely from debriefing afterward. Timing, relationship status, and the other person's capacity to receive information all determine whether disclosure strengthens or damages trust and perceived competence.
• •Reciprocity as an Elicitation Tool: Rather than searching for the perfect question to unlock a reserved partner's feelings, lead with personal vulnerability first. Sharing something emotionally specific — uncertainty felt on a wedding day, fear about a career decision — activates a near-instinctive human reciprocity response. The other person finds it socially uncomfortable not to match the disclosure level, making this a more reliable method than direct questioning.
• •Regret Data on Undersharing: Research from Cornell psychologist Tom Gilovich shows approximately 76% of life regrets involve things people did not do rather than actions taken. Palliative care nurse Bronnie Ware's research on dying patients identifies five top regrets, four of which involve inaction. The third most common regret specifically is wishing they had shared their feelings more — providing a concrete, data-backed case for prioritizing emotional expression over self-protection.