Ruination - Burnout lyrics

Three hours sleep and a knot in my gut, something's coming on but I don't know what. Nervous exhaustion, my only friend, watching the sun find me here again. Can't think straight but what the f** is new? Losing my grip and there's nothing I can do. Nervous exhaustion, a void in my brain. Dead on my feet, like a f**ing machine. I can't wind down, I can't shut it out, I can't think straight, born to burn out. Day in. Day out. Day in. Day out. For what?