That's great to hear!
I also like to think I have become a much nicer person to be around (about 10 years sober now). It's difficult for me to pinpoint it on one thing, since when I stopped drinking a whole lot of things happened and changed at the same time, but I do think alcohol had a corrosive influence on my personality. I was just angry all the time when I was drinking. I didn't act it out openly, but looking back there was an underlying (passive) aggressiveness in all my interactions with other people. I would feel like shit about it, drink a lot to make me happy, but the alcohol would jut make me more irritated ... rinse and repeat, for many years, until I finally started to face my feelings (all of them) head on and sober. I think I have become more "me", more the person I am supposed to be and feel comfortable with. I have had these sorts of sudden realizations, years into my sobriety, where I would suddenly stop and think, hey, I'm .. happy? Just happy and content with myself, by myself? That's new, lol. And I do think other people feel it and react positively to it.