This song is very special to me personally because of it's meaning, or at least the meaning it has to me.
To me it's about being in a situation/stage of your life where you're so numbed down that you're not realizing how much your life has taken a wrong turn and you have repressed a lot of your emotions.
This song is about that moment you've come to realize this and decide to try and something about it instead of feeling sorry for yourself.
Like a vail being lifted from your face and you're starting to see clearly again.
And while you're still feeling terrible, there's a sense of hope starting to emerge from within you again. You realize that facing your problems will initially cause you more pain, but you have to let that happen in order to really deal with it and process it.
The road to happiness is still long, but you've accepted it for the moment and now you can start walking to that light at the end of the tunnel, which is so beautifully portraid in the video too.
It's really much deeper than I'm able to describe.