"I took a trip out to Nashville, Tenn. This was actually the last song to make it on the record. I flew out to Nashville with no other intention than to see my friend, who is on a dialysis machine everyday. He basically needs another kidney. He’s going through a second kidney transplant. It broke my heart to see him like that and basically inspired me all at the same time. I hung out with him that day, and I went back to my hotel room, and I was really restless. I just couldn’t sleep. It was one of those songs I really look forward to writing, because it almost wrote itself. I woke up at three in the morning, and I just got out the hotel paper, and I just started writing. It basically happened in 15 minutes, and I hadn’t written a song like that, that happened that fast, since Hanging by a Moment." -Jason Wade.
That's what the song means. As the writer said himself.