My recollection is that Renee Richards, in her book, said that she was "obssesed" with transitioning and that there was no way of avoiding it. I don't recall her saying that she was "happy" about transitioning but, rather, it was simply something that needed to be done.
I'm in that camp, also. As a post-op (since 1999), I would never tell anyone that I was "happy" about transitioning but rather that it was something I needed to do, like breathing. "Happy" puts too much of a cheerful slant on it and I think it may mislead some who transition into thinking that there is some nirvanna or Shangri-la at the end of being post-op.
The world is far too bigotted for me to ever be truly "happy" about my decision. I will always wonder, as Renee Richards wrote in her autobiography, why I felt compelled to do it. She, despite her knowledge of medicine, couldn't explain it and neither can I. That said, I would never go back -- that male growth was abhorrant to me. In that sense, being post-op is a success. There is NO REGRET about what I am now, anatomically. Unfortunately, I have to live in the world and I get sad when I read about other post-op TS's having difficulty. Added to that, I've faced discrimination even after being post-op. Being post-op is, unfortunately, like becoming part of a group that many in the world hate. So, even if my personal life is going along well, I feel sadness about the bigotted world. Transitioning, for me, hasn't ended that sadness. As the philosopher Dunne said, I am not an island. "Don't ask for whom the bell tolls. It tolls for thee." When bad sh**t happens to others, it hits me. It feels like a personal insult or assault, even though it's not directed at me.
I'm glad that others who are post-op find it to be an "urban myth" that there are unhappy post-ops. Psychology sessions in transitioning help in dealing with a bigotted world but, of course, there's no way to stop the hate. Like the AAA adage suggests, we have to ignore things we can't do anything about. For me, the operation relieved gender dysphoria but there is, unfortunately, no escaping the unhappiness that the world can shovel our way. Caveat emptor, buyer beware.
Teri Anne