has anyone here heard of the book Mind Games?

i asked in the psychic forum and no one had heard of it. it's a book written by jean houston and robert masters as a guide to inner space. it was written in 72 or 74 i can't remember. basically, the book lays out a set of hypnosis strategies used to enhance human potential. also, this is the book responsible for the popular john lennon song "mind games" if you have ever heard of this book or have participated in the games yourself, please fill me in on any information or experiences. i have the book now but i was looking for any other opinons. thank you