Lyric discussion by lhoggy 

Cover art for The Race lyrics by 30 Seconds to Mars

"You saved my life With blood and through sacrifice The lessons that I've learned

I promise you I said Never again Never again No never"

Seems to me that he's referring to his past drug use, where Shannon might've been the one who pulled him out of it, and then promised to never go back to that life. The "race" might be to get away from the the part of him that still wants drugs.

"Love is a dangerous game to play Hearts are made for breaking and for pain I'm selfish and I'm cold"

I feel that this is also about drugs. He's selfish in the way that he doesn't care about how his drug use affects the people around him, and therefore break their hearts when he keeps taking drugs.

My Interpretation