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's gone wrong with the good intentions of people. It introduces the Engram* as the villain, shows where it comes from, how it works, and how to remove the engrams. The book is a mental health owner's-manual and toolbox.
*Mental picture of a moment of pain or unconsciousness stored below one's level of consciousness.