For pretty much my whole life, I have been told I am too quiet. All my school reports, from when I was really young to now, say I should speak up more, and that I don't say enough.
But I don't see what is wrong with not wanting to say something all the time. I do have my own ideas, it's just that the thought of sharing them with a large group of people terrifies me. Sometimes because I maybe don't feel sure I know what I think, or just because I don't feel like telling anyone.
I have also never found being around other people relaxing. Don't get me wrong, I love my friends and I enjoy spending time with them, but I just don't ever feel I can relax properly unless I am on my own, because by yourself there are no expectations of how you should behave. You can do whatever you want, and there is no one around to tell you to not look so grumpy, or stop fiddling with your fingernails.
But the worst part of being a reserved person is that people treat it like it's a bad thing. While I realise that sometimes it is good to share your problems, I like people not knowing everything about me. I like being secretive, having bits of myself which only I know about. I find it satisfying having stuff I could tell people which might surprise them, but I still keep it back from them. It makes me feel oddly powerful, even though the only thing I am controlling is myself.
Maybe this is why I started blogging. This way, I can talk about stuff, but take a while to put down into words what I want to say, instead of having to say it to someone's face, without knowing properly what I actually want to say in the first place.