For me, it was 47 when I (DUH) discovered that transition was even a reality (that was about 3 months ago). Over the years I had heard the terms transgender and transsexual, had heard about sex changes and the like, but never really connected the dots, I had never associated those terms, conditions, and surgeries with the fact that I had always thought I wanted to be a girl and that I had always had this 'need' to dress like a girl.
I had been so deep in denial about myself that, I think, I completely refused to acknowledge the evidence that kept popping up that this is who I am and that there is a viable solution. It wasn't until I got laid off and stopped working 18-20 hours a day (to avoid the desire to fantasize, etc) and became extremely depressed and suicidal. I had also begun obsessing over becoming a girl so much that I just had to look into the possibility - lo and behold, there it was...
Susans.org. My salvation, my solution.
Now I am working diligently towards my goal of finally fulfilling my lifelong desire. For some of us, it takes a good stiff kick in the head with a very big and heavy cast iron boot to get us to see ourselves. DUH!

Deanna