Thomas Merton, the Trappist monk, describes this relationship, between activity and effect, in his book No Man Is An Island.
“My soul does not find itself unless it acts,” he writes. “Therefore it must act. Stagnation and inactivity bring spiritual death. But my soul must not project itself entirely into the outward effects of its activity. I do not need to see myself, I merely need to be myself. I must think and act like a living being, but I must not plunge my whole self into what I think and do, or seek always to find myself in the work I have done. The soul that projects itself entirely into activity, and seeks itself outside itself in the work of its own will is like a madman who sleeps on the sidewalk in front of his house instead of living inside where it is quiet and warm.”