Leslie S. Greenberg, PhD, is Distinguished Research Professor Emeritus of Psychology at York University in Toronto.He has authored key texts on emotion-focused psychotherapy, from its inception in the 1980s through today. He has received the Distinguished Research Career award of the International Society for Psychotherapy Research as well as the Carl Rogers and the Distinguished Professional Contribution to Applied Research of the APA. He conducts a private practice for individuals and couples and trains people in emotion-focused approaches.

Michael A. Tompkins, PhD, ABPP, is a licensed psychologist and board certified in behavioral and cognitive psychology by the American Board of Professional Psychology. He is the co-director and co-founder of the San Francisco Bay Area Center for Cognitive Therapy, Assistant Clinical Professor at the University of California at Berkeley, and an adjunct faculty member for the Beck Institute for Cognitive Behavior Therapy.

He is the author or co-author of 12 books, including My Anxious Mind: A Teen's Guide to Managing Anxiety and Panic (with Katherine Martinez) (Magination Press, 2010), which is a Magination Press best seller and included in the Reading Well for Young People initiative sponsored by the Wellcome Trust, London, United Kingdom. Dr. Tompkins serves on the Advisory Board of Magination Press, the children's imprint of the American Psychological Association. He lives in Oakland, California.