A simple book of self-help containing tests and techniques based on the discoveries of Dianetics. Dianetics is a spiritual healing technology. it aims to cope with the effects of the spirit on the body, and it can alleviate unwanted sensations and emotions, the effects of accidents, injuries and psychosomatic diseases (those caused and exacerbated by mental stress). Dianetics means "through the soul" (from the Greek dia - "through" and nous - "soul"). It is further defined as "what the soul does to the body."