There are many reasons why we hate self-help books, but one of the biggest is that self-help gurus only seem able to succeed if they prove to you that you suck and they don’t—this guy is the exception.

There are many reasons we hate self-help books. One of the biggest is they’re constantly telling you that if you would just do this one, crucial thing, well, that would just change your whole life. But “the slight edge” is different.

If you want to win, you have to be “Relentless”—and you can learn what it takes here from the championship trainer who worked with Michael Jordan, Kobe Bryant, Charles Barkley and many other pro athletes.