Consider starting one of your own.

It might sound like an intimidating prospect, but many people have done it successfully. All you need to do is find like-minded people. There may be more of them around than you think.

If you're in school, you might try to start one among other students; perhaps a teacher would be interested in sponsoring or helping out. If you're out of school, or can't find comrades among your schoolmates, you might try putting up a notice at your public library. It could be as simple as something like this:

JOIN A WRITING GROUP! Aspiring writers seek others, for mutual support and constructive criticism. Call 555-5555 and ask for George or Gina

Once you've gotten a few people together, you're on your way.