2Fish:
I can't speak from experience, because I'm in exactly the same boat you are. I'm a month today away from starting HRT. That said, from the time I got my letter and referral, I've now been waiting for about 5 months, so these last 30 days really seem like the home stretch for me now.
I agree with Marcellow, I've been spending the time coming out to more and more friends and family, the key people at my workplace know what's coming now as well, and just sort starting and preparing for the emotional/mental transition. I've also spent the time trying to get rid of some of the bad habits in my life, and develop some new ones that I've always wanted in my life with the goal of really being able to fully embrace a great new start.
To me, the key in dealing with the struggle of the waiting, and I know there's so much more waiting to go before everything is all said and done, has been to push myself to stay really focused on the things I can do and I have active control over, which has helped make it easier to be graceful about the waiting for things that I don't... All way more simply said than done, I know, and I won't say I've stayed perfectly to my plan, but, like everything, it does get easier with practice.
I hope that helps some.
Giselle Marie