KID CUDI SONG.... WHAT IS IT???????? IT'S ON A MIXTAPE?

I heard it at work, my friend didn't know what the name was. Think it's some sort of a mixtape? lyrics: "and these haters tryin' to take mine, i'm walkin on a thin line" Thats all i can remember and the begining of the song is all instrumental and sounds trippy....btw it's not pursuit of happieness..