Michael A. Tompkins, PhD, ABPP , is codirector of the San Francisco Bay Area Center for Cognitive Therapy; assistant clinical professor at the University of California, Berkeley; and a diplomate and founding fellow of the Academy of Cognitive Therapy. Tompkins specializes in the treatment of anxiety disorders and obsessive-compulsive spectrum disorders in adults, adolescents, and children. He is author or coauthor of numerous articles on cognitive behavioral therapy (CBT) and related topics, as well as seven books, including three books published by New Harbinger Publications: Digging Out , OCD: A Guide for the Newly Diagnosed , and Anxiety and Avoidance . Tompkins serves on the advisory board of Magination Press, the children's press of the American Psychological Association. He is a certified supervisor and trainer for the Beck Institute for Cognitive Behavior Therapy and the Academy of Cognitive Therapy. Tompkins has been featured in The New York Times , The Wall Street Journal , on NPR, and has presented over 250 workshops, lectures, and keynote addresses on CBT and related topics. Tamara L.

Hartl, PhD, is an independent clinical practitioner in Saratoga, CA, and a psychologist at the VA Palo Alto Health Care System. She has coauthored several seminal publications on hoarding behavior, including the first cognitive-behavioral model for the treatment of compulsive hoarding with Randy Frost. She specializes in the treatment of anxiety disorders and sexual dysfunction as well as compulsive hoarding. read an excerpt.