Abraham J. Twerski, M.D. ,"Pittsburgh's most famous psychiatrist," is the author of numerous acclaimed books on self esteem, healing, spirituality, and recovery. After serving for several years as a pulpit rabbi, Twerski entered Marquette University Medical School in Milwaukee and completed his psychiatric training at the University of Pittsburgh Medical School. He served as medical director of psychiatry at Pittsburgh's St. Francis Hospital, and later founded the Gateway Rehabilitation Center for treatment of alcohol and drug addiction.