Matthew McKay, PhD, is a professor at the Wright Institute in Berkeley, CA. He has authored and coauthored numerous books, including Self-Esteem, The Relaxation and Stress Reduction Workbook, Thoughts and Feelings, and ACT on Life Not on Anger. His books combined have sold more than four million copies. He received his PhD in clinical psychology from the California School of Professional Psychology, and specializes in the cognitive behavioral treatment of anxiety and depression.

Martha Davis, PhD, was a psychologist in the department of psychiatry at Kaiser Permanente Medical Center in Santa Clara, CA, where she practiced individual, couples, and group psychotherapy for more than thirty years prior to her retirement. She is coauthor of Thoughts and Feelings.

Patrick Fanning is a professional writer in the mental health field, and founder of a men’s support group in Northern California. He has authored and coauthored twelve self-help books, including Self-Esteem, Thoughts and Feelings, Couple Skills, and Mind and Emotions.