Being reserved/shy/introverted

I hate being so reserved and introverted. And being shy doesn't help either..It's just like sometimes I want some people to know me but I just don't feel the need to tell them everything about myself unless we are particularly close and they ask about it...but people don't ask and I'm not close to anyone..lol. I don't wear my heart on my sleeve. I just don't idk. It's just how I am? Anyone else wanna add to this?