Everything is going wrong?

How about this - the majority of people going to university are stressed. I get verrrry stressed with my studying and I do things last minute (usually very badly and sometimes I pass, sometimes I fail) but I really think you just need to buckle-down as best you can and do what you can. If it goes wrong, then you make another choice from there and work out what to do. -You could think about it like being in a room with multiple doors to choose from and it leads you to another room with similar. It's not always best to think about everything (the big picture) at once. Just deal with the things as they come at you and I would suggest taking some time to do things that take your mind off work and stress - things that you enjoy, they are important for keeping you healthy. The stress-relief is just as important as the work. :) I wish you all the best.