i think this song is talking about how you felt your life would be as a child. how everything was going to be so perfect, and you'd grow up getting everything you wanted. but now that you're grown up, you realize what life really is. that it's far from perfect. and so he's accepting the fact that he has to work for things and he doesn't mind having to fall down and maybe get hurt emotionally and physically. but he's throwing away his expections of himself from long ago, "a dead man", and starting over, just living life as best he can.
i think this song is talking about how you felt your life would be as a child. how everything was going to be so perfect, and you'd grow up getting everything you wanted. but now that you're grown up, you realize what life really is. that it's far from perfect. and so he's accepting the fact that he has to work for things and he doesn't mind having to fall down and maybe get hurt emotionally and physically. but he's throwing away his expections of himself from long ago, "a dead man", and starting over, just living life as best he can.