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 why I kept repeating the same mistakes in life, and learning how to stop doing it. Also, it helped to get rid of the grief associated with things that had happened in the past.