Dr. Brené Brown started her research on vulnerability, worthiness and shame six months before September 11, 2001, and says our culture has been marked by deep fear since then. Individuals, she says, have turned the fear of a terrorist attack into a belief that we are simply not enough. Watch to find out why, Dr. Brown says, those two words lead us to shut down emotionally and spiritually. Plus, she reveals how opening up can be a strength, why joy is our most terrifying emotion and what happened when she had a vulnerability breakdown.

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