When I started writing I was under the impression that it was a lonely business, you know a la Earnest Hemingway, Salinger, Harper Lee, Dickinson, I was happily surprised when I realized that you cannot become a writer without a great writing group or groups supporting you. I have joined two writing associations and two writing groups and have learned so much from each of them.
One of the writing groups I belong to is a children's writing group- I don't write children's books but the woman who runs the group runs wonderfully informative and helpful training sessions.
I met another writer on G+ who recommended that I join the Romance Writers group because where he lives that is the group that has the best meetings and he has great praise for his local branch.
Don't limit yourself to writing groups that are only the genre you write, it is great to work with authors in your genre but if there is another group in your area that is not your genre don't rule them out just because of that.
Take the time to thank your writing partners and be an active participant in your local writing associations.