Thank you everyone.
As many of you may know (since I go on about it all the time), I had an attempt at transition in my early 20s but it was a bit of a bomb. Two years on HRT, some successful outings in girl mode, a few unsuccessful outings too. Crazy mood swings - most likely caused by the less effective 1990s HRT regimen - which didn't help me much with my friends who were trying their hardest to be supportive. Patchy HRT results after two years. Anyway, thankfully all that is in the past. But it sits in stark contrast to what I have been able to accomplish this time.
The defining differences include much better psych support; much better HRT support, a mostly more supportive and accepting social attitude with some legislation to back it; greater self acceptance, confidence and maturity; dealing with my internalised transphobia, self loathing and shame; a supportive mother...she wasn't very thrilled about it back in the 1990s; and no doubt many other things.
I know transition was the right thing for me, after only two years I can hardly even relate to the male person I presented as before.