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 Self Analysis.
This book really helped me with regaining the joy of living! Self Analysis helped me gain control and certainty in various areas of my life, that were slipping through my fingers. After applying the concepts in this book my interests and relationships seemed to be renewed and I felt able again to create life as I wanted it to be.