Me too, but I've been trying to find something to work towards like right now I'm thinking of becoming a mechanical engineer. It keeps my head just above the water so I don't start to drown. My grades have plummeted but getting a tutor really helped and also not expecting too much of myself from each exam also limits how bad I feel. Try to find something to hold onto, something that gets you by for even a few days because for that few days you'll be more enthusiastic and motivated. Anyway, rambling, sorry. But in addition to tackling depression head on with meds and therapy, try thinking of possible things that might motivate you. I know it's difficult but when you find something to live for, it'll be worth it.