Aight, Jamie. I guess you're back at Scotland? Last thing I knew about you was maybe Australia, I think.
I've been in Scotland, did a roadtrip with GaZZwa and another buddy, from england, all the way up to Edinburgh, going past several places.
What I could tell is that other than Edinburgh and Glasgow, the place is pretty small and gloom (well we went for the new year, winter n shit).
Do you live in one of those typical scottish small towns, or are you in Glagow/Edinburgh?
Thing is, I wonder what kind of environment you live in. Do you have a good relation with your parents, in the sense of whether they are supportive about your issue?
Your lack of social life is not good. Most of us know what a lack of social life is like. It's not good for our mental health, you need people that can back you up, whether they are friends or family. Never underplay the importance of family though. (I know British people are quite non-attached from their parents, not like over here were we really like to have a good bond with our parents. Like, my dad is like a good friend for me, and he helps me with my own doubts.)
I think that you should just start getting more involved with activities. Anything that could be of interest, or maybe not of interest but know that does you good, like going to the gym. I dunno, here are some ideas: any sport, carpentry workshops, painting/sculpting workshops, trekking groups, mountain bike groups, diving groups, etc
The idea is to keep yourself busy with new stuff, filling you with enthusiasm, sense of purpose, thirst for challenges, and allows you to interact with people.
The best way to forget alcohol is by switching your interest into something else. And self-control. And will to find something else out there.
Also try and revisit old friends, see what they are up to. I've been away for 9 months and when I came back home, I realized I've lost many of my friends. But I was determined to change things, so I got back in contact with some friends, and got in contact with a guy I knew but weren't entirely friends and we decided to get together to jam. So I started getting to know his band of friends, going out with them every weekend, until slowly they welcomed me in the crew. That was thanks to music.
You need to meet people, and get busy with other things. That's my suggestion.
ALSO
Are you still making those youtube videos? I really enjoyed your shit, even though I found it always hard to understand your accent, but I have bad hearing anyway. Hope you're still coming up with new videos, because you're definitively brilliant.