Why i have no talents?

Try to help others whether in aiding their success or brightening people's lives. You say you're not good at anything, but do you have something that you really want to do? Passion will take you past failure and plain talent can only take you so far without passion. Think about that. Maybe you are just trying random activities without considering what your interests are. You say that you are fearful to attend social gatherings. That could be a part of your problem. You need to try and don't give in because in the end, (with possible ridicules) you pursue your dream for you. Good luck buddy.