A man was observing a butterfly painfully struggling to wriggle out of its cocoon. Taking pity, he cut open the rest of the cocoon to free the butterfly from its agony. Alas! For a few minutes the butterfly was relieved, but try as it might, it was just not gather strength to open up its wet wings to dry them and fly. It died, shortly after.
The exertion of coming out the cocoon served a critical life-giving function: it compelled and stimulated every cell in the body; facilitating blood circulation and exercising of various tissues. By the time it came out it had developed the strength and ability to open up its wet wings on its own. Once the wings dried, the butterfly would fly and live its life at the next level.
Turn your millstones to milestones!