Everyone has already given some really wonderful responses.
First, based on your pictures, I'd say you're already well on your way--and I'm not saying this just to be nice. You look a lot like my aunt Martha, who has a very active social life.
Second, I would definitely see a gender therapist ASAP! They will help you work through all these issues.
Finally, I am 49 and had a lot of the same concerns you have--and still do. What am I doing? Is it too late for this when my better years have passed? Then I stumble across several quotes that helped me:
-- Someone told me that when I'm 60, I'll still be sixty whether I transition or not so why not go ahead and transition if I'll be happier?
-- Joseph Campbell always said "Follow your bliss." If you're not familiar with the whole passage, you can google it. I reprinted one paragraph below.
-- George Elliot (see tagline) "It's never too late to be who you might have been."
I've also met several late transitioners in person who all tell me the same thing: they are much happier than before. To me, that means a lot.
Jane
"If you do follow your bliss you put yourself on a kind of track that has been there all the while, waiting for you, and the life that you ought to be living is the one you are living. Follow your bliss and don't be afraid, and doors will open where you didn't know they were going to be."