"Nothing is so fatiguing as the eternal hanging on of an uncompleted task."
I am taking the time this last week of October to finally complete several tasks that have been on my mind and my heart. I've decided that one of the keys to living in happiness and peace is to keep my promises: both large and small. When I don't, it weighs on my spirit. It saps my energy and weakens my resolve to do other things.
Find something (or someone, frankly) in your life that you have an uncompleted task for. Complete it. I promise the mental energy you spend thinking about how you haven't done it is far more difficult to live with than just doing it.