Ok, this rule is really simple: Whenever you think you’re done – as in “I can’t go on, that’s all I’ve got,” you’ve still got 60% in the tank. You think you’re maxed out but you’re really only at 40%, because that’s where the pain starts.
This is a David Goggins axiom, and he seems to be one of those people who exists simply to show us what we are capable of doing. He has walked the walk, so when he says this, I am listening.
Of course, none of us wants to voluntarily put ourselves through this kind of pain – but that doesn’t mean we couldn’t do it.
The point here is this: It’s good to periodically remind ourselves that we are all capable of achieving things far beyond what we ever thought possible. That potential is within each of us, just waiting to be used.
How much of this potential we choose to use is entirely up to us.