Primal Therapy: In Search of the Real You (1976)

Primal Therapy, a form of psychological treatment based on expelling neurosis through emotional expression, was developed by the Californian psychotherapist Arthur Janov. His work became well known across the Anglophone world with the 1970 publication of The Primal Scream (subtitled Primal Therapy: The Cure for Neurosis). It is claimed this book sold more than one million copies internationally, which - if true - makes it one of the best-selling psychology books ever.