During the five decades that I have been a psychologist, I have seen a series of psychotherapeutic practices come and go. Today, one in three Americans has visited one or another of the 250,000 accredited practitioners making offerings. Not only has the number of therapists burgeoned, but also the varieties of therapy have become a veritable smorgasbord. Assumptions underlying various bursts of therapist zeal will be explored and linked to prominent cultural and social forces in recent history.