I made a post about this a while back but I am realizing more and more how unhappy and miserable I was before I started transitioning. I was quick to anger, very irritable, it was easy for me to hate people. Even hated my (now ex) girlfriend at times for no good reason. Took my anger out on my friends. I would say very hateful things and was an asshole in general just to make myself feel better. I was constantly miserable and miserable to be around.
Compared to now where I am happier, way less irritable, way less quick to anger, no longer hateful. Just overall a better person. I don't feel miserable on the inside. I feel something I have never known before and that is inner peace. I was dying on on the inside very rapidly before I started transitioning and especially HRT saved my life and made me a better person.