Lyric discussion by rkoac1 

Cover art for Breath lyrics by Breaking Benjamin

IT IS PERSONAL STRUGGLE WITHIN HIS OWN MIND He is looking at himself in a mirror and battling his own internal demons (thoughts). It is depicted by the lyrics which are two-fold, coming from two different sources within the one individual. Yes, the conflicting voice inside all of us.
He's practically caught in the middle of his own self demise/ self destruction and on the verge of losing his good natured identity to the grim person he knows that he is becoming.

My Interpretation

@rkoac1 yes!!! Nailed it