I remember that book.  I liked the overall message too, that we create bad feelings through internalized sentences and can create good feelings the same way.  The only thing I didn't like about it was the stilted writing style.  I remember that the author related several conversations with patients which just didn't sound credible.  They all started off highly skeptical and, with a few well-turned phrases, he had them saying, "I begin to see your point."  The transformation was a little too pat, and I found it unlikely that even one person would talk like that, let alone all of them.  It made the book as a whole kind of a rocky read for me.That aside, though, yes.  Good book and, if I remember correctly, the first mainstream self-help book that promoted, literally, helping yourself.