David Stoop is a clinical psychologist and author. He earned his master's in theology from Fuller Theological Seminary and a doctorate from the University of Southern California. He founded the Center for Family Therapy in Newport Beach, California. He is also an adjunct professor at Fuller Seminary and a member of the executive board of the American Association of Christian Counselors. His book titles include You are What You Think, The Life Recovery Workbook: A Biblical Guide Through the Twelve Steps, Forgiving the Unforgivable, and Rethink How You Think: How to Create Lasting Change Today.