Who I Am Hates Who I've Been - Relient K
I'm actually listening to this song as I type. Check it out in my playlist if you want. I find it rather amazing...
"I'm sorry for the person I became. I'm sorry that it took so long for me to change. I'm ready to try to never become that way again. 'Cause who I am hates who I've been, who I am hates who I've been."
It's great to know that no matter what we become, we can always go back to God. Isn't it? :)