Matthew McKay, Ph.D., is a psychologist and professor at the Wright Institute in Berkeley, CA. In private practice, he specializes in the treatment of anxiety and depression. He is coauthor of more than thirty popular books, including Self-Esteem, The Daily Relaxer, The Relaxation and Stress Reduction Workbook, The Dialectical Behavior Therapy Skills Workbook, Thoughts and Feelings, When Anger Hurts, and Couple Skills. He lives in the San Francisco Bay Area.

Jeffrey C. Wood, Psy.D., is a psychologist who specializes in cognitive behavioral therapy and biofeedback. He is author of The Cognitive Behavioral Therapy Workbook for Personality Disorders and coauthor of The Dialectical Behavior Therapy Skills Workbook. Wood lives in southern Nevada. Visit him online at www.drjeffreycwood.com.