Ok, I've heard the song about a thousand times by now and I'm starting to think it's probably about suicide. I think it was because of the fact...
That's why this music is so great. It can mean many different things. People are always going to relate to a song different from the next guy....
I don't think it's a suicide note. There is a sense of hope in the chorus. He is realizing his problems and is about to face them.