We all have moments when we wish we had reacted differently. We can't change the past, so lets all let it rest and move on with what we do have control over--this very moment. Yesterday is gone, tomorrow is yet to appear, now is all we really have. So from this moment forward, commit to doing whatever is right to do in this moment.
I trust that God will make right the wrongs I've made and I hang on to that belief. Otherwise, I would go crazy from wishing things were different, that I had said or acted differently. Let it go, the past, and concentrate on right now. That's all you have control over.