Thing is, it's not all about rhythms, or discipline, or rest. Those things matter, no doubt, and are worthy of attention and effort. But they matter in the context of a larger, deeper, truer story, one in which I'm called to trust God with my life. Not that I'm doing so perfectly, or even well many times. If making my life work and taking care of myself is solely up to me, however, I can already tell you it ends in failure (probably very quickly and spectacularly so).
I don't want to worship at the altar of lifestyle design, however appealing that may be. I've seen the results, and they're grotesque. Sometimes being faithful means running hard. Heck, sometimes running hard is absolutely a mistake, and yet I have a God who promises my failures don't have the last word. As the Pegleg Annie song says, "Balance is an awful thing to keep."