I can make you happy - Paul McKenna
Paul McKenna does hypnosis and can help you a lot when the subconscious is acting up. I Can Make You Happy has some great, accessible, scientific research on happiness which I like.
The point of hypnosis is not to solve all your problems, but to remove subconscious blocks to conscious success. Beliefs that adults or you can’t be happy need to be removed for you to succeed in an awakening.
The real resource of this book is the first hypnosis, which I highly recommend listening to in times of crisis. I’m kind of neutral on the other books, use them if you think you need them.