If we look deeply and honesty we will find that our fears are based on some potential loss of ego or pride. This is easily rectified by being more humble. That presentation that must, in our minds, go perfectly, causes fear and anxiety because we believe that we really are perfect. That we are better than our fellows.
Recognizing the fact that we are not better than our fellows and that our purpose in life is to be a worker among workers, to truly be humble, removes the core of our fears.