David D. Burns, MD, is Adjunct Clinical Professor Emeritus at the Stanford University Department of Psychiatry and Behavioral Sciences. His best-selling book, Feeling Good: The New Mood Therapy, has sold more than five million copies  and is the book most frequently recommended for depressed individuals by American and Canadian health professionals. Many published research studies have indicated that 65% of individuals with moderate to severe depression who are given a copy of his book improve dramatically within four weeks with no other treatment.