coming out of morning shift, even if you don't have drive to do much anything you can still push yiurself to go to work (& maybe feel at least a little accomplished about it) and you have the whole rest of the day to just enjoy yourself.
but waking up like that in the morning on a late shift week? congrats, your meds will take too long to start having a real effect on you - you've won a morning of filled with boredom and dread about the misery that'll come later in the day. then after work you get home and go to bed feeling shitty, and then you wake up feeling shitty (except when you just Don't for some reason).
it sucks.