ALOKE - Head on a String lyrics

Who knows you best When you carve out the d**h in your chest? Throw it under your hood My life's this road which I misunderstood And I got my head on a string When I think of these things How I'm always alone And I'm never at home Don't fail your (???) Oh my grandfather (???) Now I drink from his Gathering sand It forms this earth, yet it slips through our hand Oh so, c'est la vie I am yours, you are free And I get my head on a string When I think of these things How I'm always alone And I'm never at home Don't fail your (???) Oh my grandfather (???) Now I drink from his (???) Oh (???) where have you've been? Because I've been lock in sands Don't fail your (???) Oh my grandmother sang me a song And now I carry it on