It's good that you are getting so much out of it. I hardly think about my therapist at all, for the most part. I see her once a month, and that's about right for me. I am coming up on my two-year anniversary of deciding to transition, and I still present as male full-time to family, many of my friends, and at work. It's going to be a long, slow slog for me.
But boy, do I think about it. All the time. Gender Identity Preoccupation, indeed. I think about it when I get up in the morning, getting dressed in male clothes. I think about it at work, when my nipples hurt, or I see those conspicuous man boobs under my shirt when I look in the mirror in the bathroom, and I certainly think about it when I come home, and change into my little t-shirt dress, put my hoop earrings in, and pad around my apartment (often pursuing Susan's Place, lol).
Terri