According to Astronautalis in an interview with Earmilk he mentioned the song is about anger eating you alive and letting go of it. His full quote is this:

“The first part of my verse is shaped around some lines from the play "Coriolanus”. Act 4, scene 2…I think? I love that line about anger eating you alive. a lot of that comes out in this record. Learning to let go of your anger, requires acceptance of flaws, in you…and in the world. That is the core of this song…letting go of the things that haunt you. and if you don’t know the play…everyone should watch this. … so sick."