All the textbooks talk about avoidance as a classic hallmark of anxiety disorder. So you need a therapist who is sympathetic and understanding but will also push you to do precisely the things that scare you.

There's a book that's critical to understanding anxiety, a 17th-century book, 'The Anatomy of Melancholy,' by Robert Burton. I wanted to write something like that.

Barbra Streisand developed overwhelming performance anxiety at the height of her career; for 27 years she refused to perform for the general public, appearing live only in private clubs and at charity events, where she presumably believed the pressure on her was less intense.

One challenge is trying to extend access to more poorly served communities in rural areas and in the inner city. Sometimes you have kids who are suffering from trauma and post-traumatic stress disorder, and they have no way of getting access to the remedies that are available to them.