When people ask me what running and writing have in common, I tend to look at the ground and say it might have something to do with discipline: You do both of those things when you don’t feel like it, and make them part of your regular routine. You know some days will be harder than others, and on some you won’t hit your mark and will want to quit. But you don’t. You force yourself into a practice, the practice becomes habit and then simply part of your identity. A surprising amount of success, as Woody Allen once said, comes from just showing up.