How to get rid of my shyness?

I think the best thing that you should do is think about what your interests are, and then join a group to do with it. For example if you have always loved singing then you might want to join a choir, or if you like art then you might want to join a drawing class. This way, you would be able to meet people who you knew had similar interests to you so you already know that you would have at least one thing that you could talk about. Once you have spoken about that one thing then you could also talk about other things and hopefully you wouldn't feel as shy anymore once that had happened.

Are you really changed? Or were you once punished because you used to talk without thinking? How do you feel about that? Was it true? Were you really talking without thinking or did people say you did? Are you still interested in people or do you like to be with them at all? Are you shy or just a person of less words? Nothing wrong with that btw. It's better to speak if you really have to say something as to speak nonsense non stop. You can learn to have small conversations about nothing if you like. Or just start with saying hi to people you pass by (without stopping and start the conversation at all). For the rest I would say: accept yourself the way you are. The best thing you can for you is being you.