When will this end?

If wishing for death was all it took, I would have died a long time ago.
How long do you have to go with your studies? Maybe you could hold out until then?
You should definitely switch rooms if possible. If you have friends then trying to spend time with them instead of being stuck on campus might be a good idea, but that is just some generic advice.

Honestly speaking, if you stay there for too long without a way of coping you will probably break completely. The year is nearly up, if your dip/degree is too long then you might just try failing it so that you can be kicked off campus and forced back home. You could then ‘restart’ somewhere else, obviously your parents will give you shit but that is better then falling down that abyss you may be starring into.

I’m sure you know all the standard generic advice out there. The best way of dealing with problems is to cut them out of your life (roommate, college/uni pressure, etc…). If however your problem is deep rooted within yourself and an inescapable lifestyle (one that requires motivation and effort which is unobtainable), then there is no answer. The only one that can help you is you. If you are the latter, then we have something in common…