Thanks to everyone for their opinions, I'm really grateful.
Cindi, killing myself will never be an option as far as I'm concerned, although I've suffered with clinical depression in the past suicide was never on my "to do" list. I've survived acting out the male role most of my life, and during those periods when I was out of relationships I felt able to indulge myself by dressing and "being a girl" when I was at home. All that had to stop when I married over 20 years ago and I bitterly regret having not told my SO about my true self before the event, so she could have made a decision of her own. About 11 years ago I had another spell of depression and was referred to a psychiatrist for therapy, but I still kept my secret to myself - how stupid I was. All my life I've longed to be female, but never had the guts to admit it to anyone for fear of shame and ridicule, that is until I came out to my SO quite recently, much to her shock and horror.
The point is, I've taken that step and added in a few more preliminaries such as losing weight, started beard removal, growing my hair, voice training, etc., all of which make me feel really good. To stop now would just seem like another cop out. I don't want to go back.
I am going to have further counselling (I still have further sessions booked with a very experienced GID counsellor), and take things very slowly, maybe two steps forward and one back if necessary. I know my SO wants to help me but she still has alot to learn about GID and at the moment I don't think it has dawned on her that if she stays with me she may end up living with another woman.
Kiera, what you have said is very helpful and I will try and get hold of the books you mentioned. I have "My Husband Betty" by Helen Boyd, but I don't see much similarity between Betty and myself. As we ourselves all know there is a big difference between a transvestite who dresses purely for sexual relief and transsexuals who consider themselves to have been women all their lives, for whom dressing has secondary importance - and no doubt many many shades in between those extremes. I feel I am in the latter camp.
Annie, yes I agree that when the SO gives out signals of uncertainty it can be worrying and frightening. Silence is a powerful weapon. I hope that your SO will continue to be supportive to you if you start HRT.
Best wishes to all, Louise