It's very nice song. I think it's about the human scars. There are 2 kinds of monsters - the fake one is imaginary, and the real one living in your head. So the song says "Don't be afraid of the fake one, because it's not real and can't hurt you. Be afraid of the monster who lives in you, because he's the only one that can hurt you." Maybe we're often afraid of the fake monsters all around us, but we forget about the real monsters in ourselves.
It's very nice song. I think it's about the human scars. There are 2 kinds of monsters - the fake one is imaginary, and the real one living in your head. So the song says "Don't be afraid of the fake one, because it's not real and can't hurt you. Be afraid of the monster who lives in you, because he's the only one that can hurt you." Maybe we're often afraid of the fake monsters all around us, but we forget about the real monsters in ourselves.