25 to life is the sentencing for murder. This song is about Marshal's relationship with Hip-Hop. "F*ck You Hip-Hop I'm leaving you, my life sentence is served" meaning that he gave his life to Hip-Hop, he sacrifice everything for it, he was so devoted that he didn't spend anytime with his girls "Jealous when I spend time with the girls". In this song, he is saying how he is done with Hip-Hop, how he gave everything to it and it didn't give anything back, it didn't appriciate him. He's saying he's walking out on Hip-Hop, he's "divoricing" it, "Go marry someone else and make em famous" He became addicted to it, and this is his release/recovery.