William Knaus,  William J. Knaus, EdD, is a licensed psychologist with more than forty-six years of clinical experience working with people suffering from anxiety, depression, and procrastination. He has appeared on numerous regional and national television shows, including The Today Show, and more than 100 radio shows. His ideas have appeared in national magazines such as U.S. News & World Report and Good Housekeeping, and major newspapers such as The Washington Post and the Chicago Tribune. He is one of the original directors of postdoctoral psychotherapy training in rational emotive behavior therapy (REBT). Knaus is the author or coauthor of over twenty books, including The Cognitive Behavioral Workbook for Anxiety, The Cognitive Behavioral Workbook for Depression, and The Procrastination Workbook.