Hey mate, i know a lot of you guys on here are anti-alcohol, but im introverted too and honestly the best thing you could ever do is get a job at a cool pub. You will make close friends very quickly and its like a party all the time. So fun! Also you will boost your confidence seeing all your customers that seem so respectable, embarrassing themselves and acting like dicks. Seriously do it! It's the same as being out every weekend meeting people but without the hangovers and without worrying all week about how stupid you were being.