There's a book called the Law of attraction by Michael Lozier. The guy did a terrible job designing the cover. It's got a goofy looking stupid rainbow on the front. But dude, if you're listening, your book is ugly as fuck and you need to change it. I personally believe that the law of attraction, I don't care if people think I'm crazy or not. If you struggle with self discipline, you need to read this book because self discipline is your brain's power. That is your strength from the mental side.