God is always bigger than the boxes we build for God, so we should not waste too much time protecting the boxes. --from Everything Belongs: The Gift of Contemplative Prayer
Do not waste time thinking about what you could have done differently. Keep your eyes on the road ahead and do it differently now.
Rest time is not waste time. It is economy to gather fresh strength... It is wisdom to take occasional furlough. In the long run, we shall do more by sometimes doing less.
Write it on your heart that every day is the best day in the year. He is rich who owns the day, and no one owns the day who allows it to be invaded with fret and anxiety. Finish every day and be done with it. You have done what you could. Some blunders and...