You can overcome your anxiety by giving your smile to the people you fear of. You don't have to lose hope or lack confidence because they will not eat or beat you to death.

Those people around you might give comment against you but it doesn't mean that you will be feared of them. You need to help yourself improve for your education and career in life. Being fearful to others, would only lead you to despair because of losing hope and self confidence.

You should be confident with yourself always they are not similar with you. Never compare your abilities and theirs, every one of us has its own unique abilities that should not be compared to others. The most important thing is to your best to show how you are very nice to the new people you meet.