I've been listening to this song quite a bit lately and each time one line gets me. In fact, I find myself repeating it often when I struggle with something: 

"And you look at this prisoner, and say to me son, 'Stop fighting a fight that's already been won'."

Wow, we do that a lot, don't we? Fight battles that God's already won for us--even if we haven't yet seen the victory, it's there.

If you're fighting today; fighting your past, fighting your discouragement, fighting depression or addiction...whatever your fight is, God's calling to you, "Stop fighting, I've already won that battle."

Let Him free you.