How to start sharing my experiences and things which happen in my day to day life ??

I have been lurking around on this sub for few days, and have found that people share even small things which are happening in their lives. I am saying this because I am a kind of person who shares very less. Be it my parents or friends, I hardly share anything with them. The thing is , I have good repo with my friends, they know me well, we talk, play LAN games together and all, but when it comes to sharing anything personal or even small things like day to day activities, I hardly do any. I have seen people casually talking, like one of my friends shares stories of his friends from school with me (I am in college presently), I now even know their names and who is in relationship with whom. But when it comes to me, they hardly know any of my previous friends, all because vi do not share anything. The same thing is with parents also, whenever we talk over phone, it's always the as usual conversation of how are you and all. I hardly remember any time when I have shared something with them. Sometimes I feel like I have nothing to share. I don't know what to tell others about myself or be it about anything I do that day. I want to change this habit. I want to open up to the people, tell them how I am feeling.