Find things to be passionate about. discuss these things with people and see who shares similar interests and tada.
Find something you are passionate about and do it. It's nice to be around people who enjoy what you enjoy and understand your passion for that same thing as well.
Maybe look through your local meetings section of your town's local newspaper, then go to the meeting, learn a new hobby, and make new friends. : ) I plan to go to a monthly woodworking get-together that I saw in my paper.