Beating yourself up over lashing out at someone isn’t going to help you or the person you hurt. Instead, take responsibility for your actions, apologise sincerely (because if they matter, you truly will be sorry) and keep moving forward.
Source: Hurt people hurt people @ My So-Called Chaos: Life, love, and Everyday Insanity.
Photo: I'm Sorry by Leyram Odacrem under Creative Commons license