Emmett Velten is the author of "Under the Influence: Reflections of Albert Ellis in the Works of Others, "the coauthor with Albert Ellis of "Optimal Aging "and "When AA Doesn't Work for You," and a member of the board of directors of the Albert Ellis Institute. He lives in Phoenix and San Francisco. David Burns, MD, is the author of "Feeling Good "and "The Feeling Good Handbook," He lives in California.