Maybe I am doing the wrong thing, but that scares me because being 2 years into a university course is an expensive venture.
You don't seem to understand. What is TWO YEARS compared to YOUR ENTIRE LIFE? If you keep doing something you don't like because you are afraid to ditch two years of "progress" then you might end up being unhappy for the next 60+ years.
I don't think I will. I was thinking "Engineering shortage means big bucks" when I chose my options for university.
Then you already know what you need to do. If you do not think you will enjoy your major or your career, you need to find a new one. I was depressend and unhappy and doing poorly in college because I picked business for money and found out that, when I switched to History, something I loved, that the world became a much brighter and happier place.
If I had done what I want to do that would be creative writing or game design or something but I have always been of the opinion that I should not ruin what I enjoy by doing it as a profession.
That is a cop-out man. You will not "ruin" what you like. You can treat something as both a career and a hobby separately. If game design is your thing then you can be a game designer and make RM2k games for fun in your spare time or whatever. Having a job doing something does not suddenly change it into something bad. If you want to learn about something you like then DO IT man, don't make excuses about it, just go for your heart's desire. Do you really want to be 90 years old, dying in a hospital bed saying "man my life would have been so much better if I had done the things I wanted to do instead of being weighed down with what other people wanted me to be or what I assumed my own limitations were. You have to go out and grab happiness man, it doesn't just flutter in the window and say HERE I AM YOU ARE HAPPY NOW!
Saying that, the one I have chosen is perhaps too difficult for me?
Again, man, you aren't even asking yourself the right question. Who cares if it is hard
is it what you want? Because if it isn't then for heavens sake, you don't take this much time to decide whether to stop hitting yourself in the hand with a hammer. If you don't like it or if it is uncomfortable, STOP DOING IT.
I find it hard to look after myself properly on a day to day basis because I cannot handle living alone with no-one to look after me I think. This is a point that saddens me particularly. I neglected my friends when I was with my girl and now they are pretty alien to me. My family don't understand anything with "depression". I think they refuse to upset it. Last summer I moved away from home because I clashed with my mother so much. She is depressed also. We are mirror images of each other.
This is a problem you need to confront, but not right now. First you need to start being happy and doing the things you really want to do. Eventually though, you will need to make up with your family and get new friends or make up with your old ones. You have friends here online. I know they are not the same as having people you can touch or physically see, but we are here for you man, just like we are here for Steel and Sarah as they are going through their hard times. If you can't talk to your mom, call up your father, your sister, your brother. These people are your family even if you are distant from one another. I can't even imagine that you could call up one of your family members and say "I am in a really bad spot, I am seriously considering killing myself, can you please talk to me for a while?" that someone would say "No sorry figure it out yourself *click*"
2 years of student loan on my back with no result. They may let me resit but judging on how badly I have failed them I doubt that. I am going to the doctors on Monday to get some sort of documentation to give to my department so they can take my mental state into consideration before booting me out. I am still in contact with her and a lot of people tell me I shouldn't be because she drags me down. I guess I still love her but ultimately I cannot get back together or be with her because it will just bring both of us further down the spiral. This is a major Catch 22.
It is not catch 22. She brings you down, you are not compatible, it is over. You just have to move on about it man, if you are prone to depression, as you claim to be, what you need is someone happy, someone who can pull you up when you are feeling down. I can't really give you advice on finding a girl, because I have not found one that I am interested in, so I really don't have any experience here. As for your doctor, that is a good idea. Have them recommend you a psychologist anyway, even if you never go, but perhaps you will and perhaps it will help you.
About the loans and the money, well yeah money is a thing in life, but you have to put it aside for now and move forward regardless of whether it is costing you, you can't put a price tag on happiness, and you need to go for it.