Cody...you can do this, man. This forum is jammed with quitters. The path you are walking down has been trudged by many others. Get thru it a little at a time. After the first couple days, the physical part will get much much better. Once you beat its ass, that feeling of accomplishment can help get thru the mental part.
Like everyone says...one day at a time. I'm on day 10 and I already feel like a different person. You can do it, bud!