If you want to find out more about Dianetics and Scientology, the best way to do this is to read an L. Ron Hubbard book on the subject. I personally recommend you read Dianetics: The Modern Science of Mental Health.
This book gives one a complete understanding of how the mind causes upsets, pains, unhappiness and lack of confidence and what you can do about it. It helped me get rid of my shyness and lack of confidence in talking to people.