I had a change of heart a long time ago and it took more time to actually do it, but now that I get it, I have more peace in my mind. I've had a lot a lot of people hurt me, but telling myself they're worth more than I think they do so that matters. Just because they hurt me, doesn't mean they don't deserve good. It's hard to tell yourself that you know? Especially when you're hurting so much, but it's true. Why argue with something that brings peace and truth into your life?
I guess this was one of the things that really helped me in the past. I had to realize that even if this person tried so hard to ruin my life, it doesn't mean she matters any less than I do. Because of that, I didn't have the heart to pull through with the revenge I had in mind. Today, I still won't act on it because it all goes down to how I wouldn't want to be treated that way, so why do it to another.
It doesn't matter what you've done. You still matter.