I've just started noticing that a lot of secular songs can be applied to a person's journey with God. Not all of the lyrics, but a lot of them. It's like Andrew Farley says in his book "The Naked Gospel", we need to live the Christian life so that it feels like Jesus is just below our skin (or something to that effect).
I wished I had the guts to live it out in that way, but I'm afraid of what may come out!