I was strolling through the Old Mission rose garden a couple of weeks ago, and photographed this rose. It reminded me of how much we miss by worrying about things we can't do anything about: This moment is all that matters; do not let it go to waste with thoughts of past transgressions or frets about the future.
"Finish every day and be done with it. You have done what you could; some blunders and absurdities no doubt crept in; forget them as soon as you can. Tomorrow is a new day; you shall begin it serenely and with too high a spirit to be encumbered with your old nonsense."
- Ralph Waldo Emerson