Pritam pretty much hit it on the head with his interpretation. On the second stanza he says "so I sent some men to fight, and one came back in dead of night, said he saw my enemy, said he looked just like me, so I set out to cut myself, and here I go." I think the men he set out to fight represent his inner conflict with his own identity, the one who came back in dead of night (unannounced and unexpected, was his conscience telling him he's wrong although he feels in the right. His enemy looks like him because it is him, so he sets out to cut himself. Means he will destroy the good conscience, to prove himself right to himself, when in reality he's wrong. And this is the reason he keeps making the same mistake.

This song is INCREDIBLY deep, it sometimes brings tears to my eyes. I think it's one of the most beautiful and poetic works of art that exist. So much emotion/experience/intelligence/and talent is combined in this song. It just makes it...... A FLAWLESS work of art!