Joan Davidson, PhD, is codirector and founding partner of the San Francisco Bay Area Center for Cognitive Therapy and assistant clinical professor in the clinical science program at the University of California, Berkeley. For over twenty years she has worked as a cognitive behavioral clinician specializing in the treatment of adults with mood and anxiety disorders. In addition, she teaches, writes, and provides clinical consultation and supervision to students and licensed professionals. Davidson is Founding Fellow of the Academy of Cognitive Therapy and an Academy of Cognitive Therapy Certified Trainer/Consultant. She is the author of Daring to Challenge OCD: Overcome Your Fear of Treatment and Take Control of Your Life using Exposure and Response Prevention (New Harbinger, 2014) and coauthor of The Essential Components of Cognitive-Behavior Therapy for Depression (American Psychological Association, 2001) and videotape series of the same name.