I like this song by Andrew Paul Woodworth: Thick Black Mark
Google it it's a good song.
As starless skies above the weather, I only hide to sleep on stretchers, another thick black mark, upon a thin white heart If i could prove my heart was bigger than my ego, could i expect my friends to forgive me for the things that made me wrong... If my behavior made me better than my thoughts are, could i demand it i be counted among the cleanest and the strong....
You can not change your past, but you can ruin a perfectly good present by worrying about the future.