Sally M. Winston, PsyD, is founder and executive director of the Anxiety and Stress Disorders Institute in Baltimore, MD. She is a founding clinical fellow of the Anxiety and Depression Association of America (ADAA), winner of the inaugural ADAA Jerilyn Ross Award, and was previously awarded the Association for Behavioral and Cognitive Therapies (ABCT) book award. She has over forty years of clinical practice and training specializing in anxiety disorders and obsessive-compulsive disorder (OCD). She is coauthor, with Martin Seif, of What Every Therapist Needs to Know About Anxiety Disorders, Overcoming Unwanted Intrusive Thoughts, and Needing to Know for Sure.Martin N. Seif, PhD, is cofounder of the ADAA, and was a member of its board of directors for fourteen years. Seif was associate director of The Anxiety and Phobia Treatment Center at White Plains Hospital, a faculty member of New York-Presbyterian Hospital, and is board certified in cognitive behavioral therapy (CBT) from the American Board of Professional Psychology. He was previously awarded the ABCT book award, and maintains a private practice in Greenwich, CT. He is coauthor, with Sally Winston, of What Every Therapist Needs to Know About Anxiety Disorders, Overcoming Unwanted Intrusive Thoughts, and Needing to Know for Sure.