How to be more self-centered in conversation?

[CleanTheSlate]

I know, this is a rather unusual trait to ask for advice on.

 

Generally in conversation, I'm a listener; I like listening to others and learning about others' experiences and lives. However, I don't often contribute much for contributions. This is mainly a combination of a fear of coming off as conceited/self-absorbed and the fact that generally, people seem more interested in talking about themselves than listening to what I have to say. Nonetheless, sometimes I like just talking about my day or talking about experiences of my own, but often, I don't know how to for the aforementioned reasons. Usually, I only share things about myself if I'm directly asked. I do notice that often, I know tons about somebody while they know very little about me, and often the other person won't go to the trouble of trying to get to know me as well as I've gotten to know them. However, when I do talk about myself, it almost feels weird- as if I'm being self-centered even though I know that's not the case (though in the past, I've had a few people tell me that I can come off as conceited and self-centered, which might also contribute to this)

 

So, basically I'm asking, how can I be more confident in sharing stuff about myself in conversation? In particular, how can I get over these preconceived notions that I have and convince myself that sharing details is two way?