The more I've digged the more I saw there was nothing there but an empty hole... and so I came to the conclusion that no one can tell you how to live your life but you. Because no one will truly know the complexity of your problems and how to solve them. Besides a lot of it is based on what you are capable of pulling off because someone could suggest to you what they would do but you wouldn't be able to do the same because it could be out of your capabilities.
***I should probably make a mytake on this to make it a little more clear and less vague.
Self-help books are written by people who make their living writing self-help books, and the product they produce is made to one commercial standard: will this sell?
But that OSFA mentality appeals because most people want to believe that crap. Look at the questions posted on this site. "Do all men like _____?" or "Why do all women say this but act the opposite?" etc. People are looking for overly simplistic answers, so the crapola on the self-help shelves sells like hotcakes.
However, there are occasional nuggets of useful information contained in those paperbacks.