We already know all the metaphors. A muscle, once exercised, needs to rest to grow stronger … et cetera, et cetera.
And yet it’s so easy to get hooked on busy-ness, and so hard at times to unplug from it.
Hemingway said that he used to give some possessions away each year to prove that he in fact owned them and not the other way round; similarly, taking (and enjoying) some earned downtime can be a good test of work’s worthiness.