In this book, Péter Popper, as a well-known representative of clinical psychology, gives a glimpse into the workshop secrets of his profession. It describes the most common individual and group psychotherapy methods, from conversation to psychoanalysis and hypnosis to psychodrama. He writes about the problems and doubts that plague the psychotherapist in today's social reality, and who he thinks can become a successful healer. The book tries to dispel the excessive hopes, illusions and expectation of miracles against psychotherapy. At the same time, it offers important knowledge to the doubters, the superiors, and those who view psychotherapy with prejudices.