Eminem quote from "Till I Collapse". When you feel like you can't take it anymore and are losing hope - this song's powerful lyrics will give you strength - especially since they are truths from Marshall's life experiences.
It's actually "So baby don't feel MY pain just smile back." Lyric from Eminem's song When I'm Gone based on him telling his daughters not to mourn him when he dies, but to remember the things we wanted to do for them. It's a lovely song, check it out.