I sometimes wonder if the psychological effect of hormones, rather than the hormones themselves, is what allows people to explore and express their emotions more, or even less. I know a large number of people who cry at the drop of a hat, and aren't taking HRT.
The feeling within yourself that you're being who you are can go a large way to exploring who you are, and everything which comes with that. Sometimes that act is all that's needed for the subconscious to say it's okay to do everything I've been repressing all this time. I am me, and this is how I am. Deal with it. Hormones may be the catalyst, not the cause, for some people.