Well, I don't know about the rest of them but number 3, lose yourself, seems to be about his life- rapping. Not about start ups. "Palms are sweaty, knees weak- arms are heave, vomit on your sweater already- mom's spaghetti." Ect. Ect. He seems to be talking about the rap battle he is about to have..you know, like in the movie 8 mile..
