When we think we have reached our absolute limit, we still have 60 percent more to give! That’s the governor in action! Once you know that to be true, it’s simply a matter of stretching your pain tolerance, letting go of your identity and all your self-limiting stories, so you can get to 60 percent, then 80 percent and beyond without giving up. I call this The 40% Rule, and the reason it’s so powerful is that if you follow it, you will unlock your mind to new levels of performance and excellence, and your rewards will run far deeper than mere material success. The 40% Rule can be applied to everything.