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 what was happening to me and why I reacted the way I did. However more than that, the book explained what I could do to change. This really tells you how to change for the better permanently. Once the negative portion of the mind is handled, it's handled forever. There is nothing but good results.