You don’t need willpower to change your life. What you need is a set of good habits that you simply do automatically, without having to gin up the willpower to do them.
Atomic Habits will teach you how to form those good habits. Quickly. Efficiently. More easily than you ever imagined. I’ve used this book to create a standard set of habits that get all the boring stuff done in my life without me thinking much about them. So I can spend my life thinking about the fun stuff.