I was getting my haircut a while back and the person cutting my hair said that she wanted to lose weight and be healthier. She was thinking about buying a self-help book to learn how to lose weight. I asked her how she would instruct me to lose weight and she said to eat a healthy diet, healthy portions, get up and move a little bit, take a multivitamin, and drink enough water. I asked her why she needed a self-help book to learn how to lose weight when she already knows exactly how to lose weight. Remember people, nobody ever lost weight by sitting on a couch reading a book about how to lose weight.
There are many people who buy self-help books because they are hoping the author will give them an easier way to accomplish their goals to which the self-help book will do nothing for them because they are operating under a mentality that nurtures failure. Stop thinking so hard and do what you already know you need to do.