I've always been an introvert, but lately I've been working on it, one thing I always used to do when I got home was too analyze everything negatively, all the things I said and how it was perceived etc.. I wanted to not care anymore and thought that if I'm doing it they must be doing it too ! they're probably not thinking about what I did or said..

Just say the things you want too say and its more fun and easier too connect with people. If I constantly try and think of the right thing to say I end up being boring and nervous.