Another Great Book by L. Ron Hubbard
One of my very favorite books by L. Ron Hubbard is Self Analysis.
When I was only in Scientology a few months, I got a copy of this book. You read it and there are processes you run on yourself. I remember how I spent a day off just reading through the book and using the processes, and at that end of the afternoon I felt better than I had in years!
It's pretty phenomenal how powerful that book is.