With over 35 years of clinical experience and approximately 90,000 therapy sessions under his belt, Dr. John Mayer, PhD has a wealth of practical knowledge and insight into the challenges that mental health professionals face daily. As the author of over 20 books and 60 journal articles, Dr. Mayer’s contributions to the field are both vast and influential. A graduate of Northwestern University Medical School in clinical psychology, he has taught at several prestigious universities in the United States and abroad.