I get you. I was also once stuck in my life because of the fears of rejection and failure. I was afraid to show the world my true self for the fear of others mocking me - and some truly did.
But I realized that it was in my mind. I was the one limiting myself to shine. I was the one accountable for my success and not them. That I should be the first one to take action towards my goals and celebrate the everyday wins I make.