William J. Knaus, EdD , is a licensed psychologist with more than forty years of clinical experience in working with people suffering from anxiety and depression. He has appeared on numerous regional and national television shows including Today , and more than one hundred radio shows. His ideas have appeared in national magazines such as U.S. News and 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 training in rational emotive behavior therapy (REBT). Knaus is author of twenty books, including The Cognitive Behavioral Workbook for Anxiety, The Cognitive Behavioral Workbook for Depression , and The Procrastination Workbook .