
Whether the decision is big or small you can’t know the outcome. Your decision is based on a prediction, real or imagined. Regret is so mindless, because (if you don’t like the outcome of your decision) you’re presuming the choice you didn’t take would have been better. There’s no way to know that.
(paraphrased thoughts of Dr. Ellen Langer PHD)
You cannot direct the wind, but you can adjust the sails!