Therapist? Or, a for real Gender Therapist?
I found that there is a BIG difference in the two I've seen. Not a large sample pool but....
If you aren't near a big metro area, a Gender Therapist may be difficult to impossible to find. Next best is someone with experience with TG clients. Hopefully not just what I call "A Rubber Stamper". AKA a therapist solely for your HRT CYA letter.
Local TG support groups are the best places for personal recommendations, and getting a bit more honest evaluation in a face to face referral vs a here's one to try email. A state level, perhaps county if there is one, Trans or LGBT group may offer up leads to T friendly therapist. Also, do not overlook your local PFLAG chapter which may have leads.
The only time I ever saw a therapist before the age of 50 was when mom shanghaied me when I was like 14-16ish, after finding and disappearing my stash of clothes for the second or third time. You for sure know the drill. A therapist's only hope of helping you is by you being totally open and honest with them. While you in turn being totally open and honest with yourself. Especially when asked the hard questions you so much want to avoid even thinking about hearing, much less answering. This is where knowing you're seeing, at the very least, a T-friendly therapist and one who just didn't take a course 10 years ago where they spent a class on it helps.