"Whatever is begun in anger ends in shame."
Oh my, what truth there is. How many times have I gone out and done something incredibly stupid because I was mad at somebody? I don't think I can count that high, and I know I don't want to remember all those dumb things that I've said and done.
The truth is that when we let ourselves be controlled by anger we end up hurting others, and more often than not those we hurt are the same people that we should be showing the most affection and consideration to. The fact that we can't go back in time and change the actions that we've taken only makes it all the more important to strive to be kinder and gentler to those around us.