I think this song means:
there is someone that he loves that is just.. lost. maybe depressed? He would do anything in his power to help them, and is so concerned with them that it ends up hurting himself so he starts to feel the same way, but feels it would be selfish to give up (I will breath fire/and never stop to think about myself/i'll just keep holding on/to everything for everybody else). He is insignifigant to the person that he helps, and he expresses his frustration (I am like a pill to help you heal/I was only trying to make you feel something). Then when he finally gives up, everything comes crashing down for the one he loves, but it is too late.
I think this song means: there is someone that he loves that is just.. lost. maybe depressed? He would do anything in his power to help them, and is so concerned with them that it ends up hurting himself so he starts to feel the same way, but feels it would be selfish to give up (I will breath fire/and never stop to think about myself/i'll just keep holding on/to everything for everybody else). He is insignifigant to the person that he helps, and he expresses his frustration (I am like a pill to help you heal/I was only trying to make you feel something). Then when he finally gives up, everything comes crashing down for the one he loves, but it is too late.