Most of my happiness examples are from when I was very young and easily 'mistakenly' labeled as a girl. I guess that's it. It doesn't matter if I'm 'really' a woman. Ultimately that's just a word game. What matters is that everybody around me who knew me before thinks my decision to transition 'make sense'.
Causality debates don' t matter either.
Even if there was a transsexual gene or something, it's my emotional experiences which make me who I am. So, to me, emotions are at the center of what describes transsexuality. But in another sense I sometimes feel alienated from some other transsexuals I meet. I used to live in a city with a large transsexual support network. It was really helpful for me.