I have not had a routine for two years, it's been hell.
You wake up with the sun on the horizon and you can't say whether or not it's going up or coming down
You get up at 1 AM and go to sleep when everyone else gets up, you even lose contact with the people you live with
You lose your sense of purpose and motivation, everyday meshes into the next in one long blurred mess
You forget to eat, sleep, get dressed, clean yourself, it erodes you horribly.
Someday I'll get out of this rut though 
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'not only has he hacked his intellect away from his feelings, but he has smashed his feelings and his capacity for judgment into smithereens'.