Yes but be careful what you wish for. What I mean by that is, you are you, you are unique, and I'm sure that plenty of people like you for it. You don't wanna go changing radically. I empathise cos in a sense I'm the same. It's not easy, you've just got to will yourself to get out of that shell, as noone can physically drag you out. If you have difficulty then maybe you could confide your feelings in a sensitive friend, who can help you to feel more included and almost act as a facilitator by which she/he directs more of the groups attention on to you as often quiet members can get overlooked in a boistrous crowd. Good luck, and remember it can be done, its very scary but the leap is worth it.