L. Ron Hubbard discovered the single source of stress, worry, self-doubt and psychosomatic illness — the reactive mind. In his book Dianetics: The Modern Science of Mental Health he described the reactive mind in detail and laid out a simple, practical, easily taught technology to overcome it and reach the state of Clear. Dianetics (which means “through soul”) is that technology.
The mind is basically a communication and control system between the spiritual being that is the person himself — and his environment. It is composed of mental image pictures which are recordings of past experiences.
The individual uses his mind to pose and solve problems related to survival and to direct his efforts according to these solutions.
The reactive mind is the portion of a person’s mind which works on a totally stimulus-response basis, which is not under his volitional control, and which exerts force and the power of command over his awareness, purposes, thoughts, body and actions.
What is the difference between Scientology and Dianetics?
Dianetics comes from the Greek dia meaning “through” and nous, “soul.” It is further defined as “what the soul is doing to the body.”
Dianetics uncovers the source of unwanted sensations and emotions, accidents, injuries and psychosomatic illnesses, and sets forth effective handlings for these conditions. Further research into the spiritual aspects of Dianetics led to the discovery of Scientology.
Scientology, on the other hand, is the study and handling of the spirit in relationship to itself, to universes and to other life. Through the practice of Scientology one can increase his spiritual awareness and ability and realize his own immortality.
The best way you can really find out about what Dianetics is, is to buy and read a book and then you will know for yourself.