I love shy people. I just think they are adorable. They are also great friends. You don’t have to go overboard to make people like you. You don’t have to join big crowds to get noticed. You should make sure you are comfortable by people. You don’t have to party and drink if you don’t want to. There are people who will put you down because you don’t do those things and those people are not your friends. Usually shy people stay in small groups because they are comfortable that way and I say keep it that way. Whatever makes you happy.
If you want to open up more, I would say walk with a smile and talk to people first. I always say hi to people and start conversations with people I don’t know. I did it yesterday on valentines day. I was telling a lot of people “happy valentines day” and it made them happy. When you get comfortable talking to people, you will open up more.