This song is so beautiful the first time I heard it I cryed (a first for me) and that was before I knew the meaning.
This songtalks about makeing a choice or doing something that has turned out wrong, and they would give anything to go back, to live the life they once had, to be the person they once were. But no matter how much they try. They can't they just lose themselves more and more untill is becomes to late. So they are calling out for help because they know they can't do it alone.