Have you ever questioned the way you navigate your inner-world? The way you think, feel - even the way you react to the emotions you experience every single day. Harvard psychologist Dr. Susan David argues that you should, because our awareness of those feelings is the single most important determinant of our success in life.  In this interview, Dr. Oz and Dr. David strive to help all of us direct the complex system of our thoughts and feelings with acceptance, purpose, and an open mind, even arguing that being negative can be more positive than we think.