Something, then rest
The secret is to not allow the fact that you can't do everything keep you from doing something. Something, then rest. Something, then rest.
Breath animates the clay of our being. It is the lusty cry of the newborn, and the essence of wind, spirit, muse, sound...Everything "breathes." Think of the woods on a spring day, the sussuration of leaves, the rippling grasses, the trembling of dappled light.