Just Don't Feel Like It

Ever have that nagging in your head "You need to loose weight", "You need to exercise", "You need to pick up the house"? I do and they're all screaming at me at this very moment, but I just don't feel like doing any of it. Is it because I work midnights and I'm always flip flopping my life around? Surely there are people out there who manage all this and work midnights, but where are they?