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 Science of Survival.
This book really helped me with my ability to choose the people that I want in my life. It so completely and simply lays out the basics on human behaivior that once you've read it, you are able to see through people's facades and into their hearts and know them for who they really are. I was able to spot the people that helped make my life better, as well as those who were destroying me.