I have always been shy around people, not knowing how to start conversations or what to even talk about, and if you put me in front of people to speak I would run a mile, my lip would quiver I would feel sick etc..its hard but you can overcome it. I learnt to be brave, not to worry and I watched how other people (more social people) interacted with each other and learnt from them.. Talk about anything, people will be receptive and if they aren't then it doesn't matter. I never thought people would like me or be receptive to me so I shied away from putting myself out there, I wish I hadn't 'wasted' my years with this thought cause I was so wrong...
Believe that you are worthy and you will find a way to open up....