Imagine you’re a boxer, and on your first day in the ring you take one on your chin. It’s gonna hurt like fucking hell, but at year ten of being a boxer, you won’t be stopped by one punch. You’ll be able to absorb twelve rounds of getting beat the fuck down and come back the very next day and fight again. It’s not that the punch has lost power. Your opponents will be even stronger. The change has happened within your brain. You’ve calloused your mind.