Like CarolD wrote, what are things you are interested in?
Realize the world is waiting for you. Just step outside. Start a hobby. Take a class. Volunteer your time. Fly a kite. All these things will not only stimulate your own interests but will cause you to find new friends.
I'm sure you don't know what to do first. It's not important. There is no right way to begin. Just do something everyday. It will do wonders for not wanting to drink.
You're not a non-person. You've just put things on hold while you were drinking.