Lyric discussion by TheX13 

Cover art for I Appear Missing lyrics by Queens of the Stone Age

I think it has to do with how he CHANGED after his near death experience. "A spitting image of me Except for a heart-shaped hole where the hope runs out" "Pieces were stolen from me"

Maybe he now appreciates life more? "With my toes on the edge it’s such a lovely view"

Yeah, he was really depressed for a while after it happened, I think that's what the "heart shaped hole" line mean.