Why do i always get myself into this situation

When your behind a LOT of extremely hard and time consuming assignments, some you are literally unable to do because you don't know how to work a printer, and everything is due in two days and your extremely overwhelmed but extremely tired because its 4am that you need to take a break but you can't sleep because sleeping wastes too much time but you can't do anything else because your supposed to be doing assignments and doing anything other then assignments wastes time,

 so you just sit on your floor silently on the verge of a panic attack and you go onto spacehey to rant because you feel bad doing it anywhere else because you don't wanna put your problems onto your friends but you still really need to vent before having a breakdown and despising yourself in the morning for falling asleep.