The special value of a study of psychoanalysis is that makes plain how and why certain disabilities and trouble arise from the faulty working of mind and many of the difficulties of life that originate in the same way. Contents: nature of mind; our inherited equipment; what complexes can do; conflicts in mind; perverted modes of expression; projection and identification; dissociation in mind; multiple personality; reasons and excuses; problem, aberrations and sublimation of sex; mystery of sleep; dreams and their meaning; method of analysis; psychology and industry; psychology and education; mental momentum.