Perhaps it wasn’t the intent, but I find it inspiration not to dwell on my past decisions but to move on and make new ones.
-- Gibby Haynes (And/or lots of other people)
But be aware, it can cause its own issues. Example, dating and saying what you really feel when you do. It can cause things to end quickly, but at the very least you won't regret not having said what you felt. :)
Regrets are chains you put on your own legs that weigh you down for the rest of your lifes journey. Just put them aside and agree not to wear them again in the future.