Unfortunately nothing worth mentioning.
I had bought this book after it was mentioned by celebrities in several talk shows. Also in Amazon it has thousands of reviews. This book came out in 1963 and is very popular as a self-help book. To put in one line, I was disappointed. In fact I struggled to finish reading the book the first time and also the second time when I read it last week.
The author uses “subconscious mind” as a term and as an entity throughout this book as a solution for everything. This book spends significant number of pages in the beginning in efforts to convince the reader about the secrets the book is going to reveal. The book tries to combine two completely incompatible terms prayer and science desperately. Suggesting “scientific” prayers to infinite energies through subconscious mind. The author suggests speaking/commanding your subconscious mind when you are nervous for example. Speaking to yourself does reduce nervousness, imagining a future event does help you plan ahead but that does not mean it is your subconscious mind you are talking to. You can not use your subconscious mind consciously, hence the name!
The book mentions that the subconscious mind will accept what the conscious mind feeds it, hence we should not feed it with negativity. There are means to reduce conflicts or negativity through anything that distracts us but we can not improve the life by some magic filter between conscious and subconscious mind. The author picks up something which is more close to reality like healing of the body during sleep and then links it to praying for someone’s wellness in a different location, all thanks to subconscious mind.
Through out the book there is a common pattern. First one incident close to reality is mentioned. Then a parallel is drawn to another way unbelievable incident that happened to someone who the author knew (student/relative/friend/himself). Everything is blamed or credited to subconscious mind. And finally a prayer which claims to be both scientific and complying with Bible is suggested. This ranges from being slightly unreal to downright silly.
Example: One woman visualizes having a Cadillac car and then she inherits one because her uncle dies and leaves his car to her. Another woman likes an expensive bag and her fiancee buys it for her. All these are cited as results of successful prayers!
People have cured tuberculosis, sarcoma, blindness and what not.
Conclusion & rating:
Though I have provided Amazon link, I would say do not buy this book. This kind of book makes successful people more happy as they feel validated (hence the celebrities relate to it). But this book is far from being useful for someone having tough time.