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 really helped me with understanding how the mind works and it's influence on the body as well as emotions. It helped me realize that many of the things that I was very worried about could be handled, there were solutions to my problems, and that others had similar problems and worries. So I wasn't so different from others as I sometimes thought.