Lyric discussion by aptitude 

Cover art for All I Know lyrics by Screaming Trees

This song brilliantly recalls the ticking down of the clock. His dilemma is to run or stay, and if he stays he'll get everything but he'll be nailed down; and if he runs he'll be free, but he'll lose everything.

But it seems like this is a reoccurring thing, and the song begins with him facing it again.

He tells himself to bite the syringe. Then the craving grows. And he caves in.