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 eliminating all the "mysteries" of why I wasn't accomplishing everything I wanted to in life. It is the best source of true information of what mental barriers really are, how bad experiences of your past are affecting you today, and what stress really is. Best of all, it gives you the solution to all of these things so you can really be you!