you went to harvard, the editor of a magazine, and you are a suk setsful guy, not -- successful guy, not someone that you would think struggles with anxiety. >> that's not the case. there's often a gap between the personae and the turmoil within. when a lot of colleagues read earlier copies of the book i had people coming into the office saying, "i had no idea. can i give you a hug", it was disconcerting. >> anxiety paralyzed you from your social life to work. >> that's common for people suffering anxiety disorders. it can be debilitating, constraining your ability to travel, socialise, do public speaking and take risks of various kinds. it can be a handicap. there's evidence about having the right amount of anxiety. it can be a motivating force and the pump of adrenaline can spur you to perform more effectively than if you weren't anxious. >> you wrote about how basketball great bill russell would throw up. for a period when he didn't do that, he didn't perform well. anxiety can contribute to success. >> for me this was fascinating. bill russel. multiple world championships. in coll