Am I happier? No, honestly, not really. It's a medical condition that I have, coping with it post-everything does not bring universal happiness.
Some things are easier, some things are harder, some are better, and some worse.
Life isn't all sweetness and light, no matter if you are trans, cis, male, female or NB.
But then, I've always been a "glass half empty" person.
YMMV