Matthew McKay, PhD, is a professor at the Wright Institute in Berkeley, CA. He has authored and coauthored numerous books, including The Relaxation and Stress Reduction Workbook, Self-Esteem, Thoughts and Feelings, When Anger Hurts, and ACT on Life Not on Anger. McKay received his PhD in clinical psychology from the California School of Professional Psychology, and specializes in the cognitive behavioral treatment of anxiety and depression. He lives and works in the Bay Area.Sean O'Laoire, PhD, is a Catholic priest and licensed clinical psychologist specializing in transpersonal psychology. O'Laoire regularly lectures and conducts scientific research on the effects of prayer. In addition, he is cofounder and spiritual director of Companions on the Journey (COJ), a popular Silicon Valley spiritual community which seeks to recognize the God/divinity within the self. He has a private counseling practice in Los Altos, CA.Ralph Metzner, PhD, is a licensed clinical psychologist and professor emeritus at the California Institute of Integral Studies in San Francisco, CA. He has authored and coauthored several books, including The Unfolding Self, The Well of Remembrance, Green Psychology, and Birth of a Psychedelic Culture.