Jeffrey M. Schwartz, M.D., is Research Psychiatrist in the School of Medicine at the University of California, Los Angeles. He is a leading expert on the topics of neuroplasticity and the treatment of obsessive-compulsive disorder. He is the author of the best-selling You Are Not Your Brain: The 4-Step Solution for Changing Bad Habits, Ending Unhealthy Thinking, and Taking Control of Your Life (Avery, 2011), Brain Lock: Free Yourself from Obsessive-Compulsive Behavior (Harper Perennial, 1997), and The Mind and the Brain: Neuroplasticity and the Power of Mental Force (ReganBooks, 2003).