For the past 12 years, Dr. Brené Brown has studied vulnerability, worthiness, shame and courage as a professor at the University of Houston's Graduate College of Social Work. At the 2010 TEDx talk in Houston, she opened up about her own vulnerabilities and her quest to better understand herself. Her story of personal discovery resonated with people beyond those in attendance, garnering more than 7 million views on TED.com. (Watch it here.)

 In her new book, Daring Greatly, Dr. Brown examines how the courage to be vulnerable transforms the way we live, love, parent and lead. Now, in a new conversation with Oprah, she reveals how our greatest weaknesses may also be our greatest strengths. Plus, Dr. Brown delves deeper into the lessons she's learned since becoming an Internet sensation.

Watch Oprah's complete interview with Dr. Brené Brown Sunday at 11 a.m. ET/PT only on OWN.