You just have to give up some control over things and not be too down on yourself for not being perfect. I don't know if that's the case for you, but some people are shy/reserved because they want control and safety. I often don't talk just because I feel I have nothing to say. I'm not to big on small talk.

My advise is to just throw yourself out there and grin and bear it till you get back to not feeling shy again. It's like a cold pool some times.

Thanks! ^^