I'm a major fan of Mists of Avalon and a lot of the other books Marion Zimmer Bradley has written. I had the distinct pleasure of meeting her once when I was in 6th grade. She had white hair with a purple streak in it. I loved that woman.
Anyway, now that you've read that one, did you know she wrote prequels to the series? Darnit, I can't remember the names, someone help me out.
But I think there were at least 2 or 3 more in the series. Forest House or something and Priestess of Avalon. Gotta check em out.
I, too, felt extremely empowered by the Goddess and think of Morgaine often. I feel very connected with the characters in that series.