Unless the Lord...

"Unless the Lord builds the house, those who build it labour in vain. Unless the Lord watches over the city, the watchman stays awake in vain. It is vain that you rise up early and go late to rest, eating the bread of anxious toil, for He gives to His beloved in sleep." - Psalm 127:1-2

"So don't eat the bread of anxious toil, because no matter how hard you work to achieve anything, God has lifted off your back the final responsibility for its success, and God can accomplish more good for those who trust him while they sleep than they can accomplish with anxious labor while awake." - John Piper  (quoted from this article)