I feel the same way about that song. Last year I was going through a painful break up and my best friend and I were emailing back and forth about it and he told me he'd always be there to support me, and he sent me a link to that song. He's one of the few people in my life that's always there for me when I need him, so it meant a lot to me. I listened to that song a few times the following week while laying in bed crying.
You have enemies? Good. That means you've stood up for something sometime in your life.
Whenever you leave behind failure, that means you're doing better. If you think everything you've done has been great, you're probably dumb.