Tough question! This isn't something I think much about, so I'm probably all wrong about my reply. But, off the cuff, it seems to me now that I tend to talk most about my beliefs and experiences. When I talk about my tastes, preferences, and values, I think it's most often in the context of agreeing or disagreeing with something someone said. I seldom talk about my aspirations or goals. And although I freely talk about my experiences, I don't recall having attempted to give someone a chronological overview of my life story since grade school.
I think I do know one thing for sure, though. I've changed since I was in my early 30s. Back then, my second wife, who had known me for half my life at that point, characterized me as "taciturn". Nowadays, I'm a veritable ever flowing fountain of information about myself! Especially, it seems to me, when online.