Self Help Sub Sub Fields

The most successful and popular self help book of all time by napoleon hill a, think and get rich. That's just one of the various kinds of law of attraction books that exist out there. There's also the sub field of time management, how to manage your i better. How do you find your life purpose? How do you get your career in order? What are the tricks and tips and mind sets you need to be successful in your career? And that's very easy to sell to people, because, again, your care as how you earn money.