I'm going to admit, I'm still learning to accept it.
I've known since I was 13 years old that I was experiencing gender dysphoria... to the point where I knew I wanted to be a girl, I knew I wanted SRS, and I hated every single damned thing about being a guy. And yet, since that same very beginning, I've been repressing it, and refusing to admit it. I spent 10 years in the biggest form of denial of all... actively trying to pray the desires away, and believing that God had "cured" me even though He didn't, and the desires kept coming back. And yet, all this time, I've been running from it.
And in many ways, I'm still running. Even now, 11 months into hormones, having been full-time for a period of nearly 2 months straight, which I consider to be the absolute happiest months of my entire adult life socially, even after coming out publicly, even with my genital dysphoria now reaching the point where I can't even function sexually because it bothers me so much, even after realizing a long time ago that all of my doubts were completely about how society was going to treat me, and being afraid of not "fitting in," I still can't do it. I'm still afraid of that exact same thing, and it's still keeping me from going full-time and getting it over with, because I'm still petrified by the fear of how I'm going to be treated by others. So in a way, I still haven't come to terms with my gender identity. I'm still allowing myself to see it as this deviant thing that I'm ashamed of and that I have to hide from everyone, and I'm still scared to death of being visibly trans. And I'm still fighting against my gender identity, even though transition has improved my functioning on the most basic of levels in pretty much every single way imaginable. I still can't just accept it and get on with my life.
It takes a long time. Especially when you've spent so long trying to tell yourself that it was impossible and that nobody would understand you. Old habits die hard.
The thing that's helping me come to terms with it slowly, is the mirror... because the more and more feminine I'm getting, the happier I'm getting. And the more femininity I see in myself, the more I'm starting to smile. It's pretty hard to deny what your gender identity is when suddenly you're actually starting to like your reflection for the first time in your life, after 14 straight years of feeling completely miserable every single time I saw myself.