The Girl Who was scared to show her true self!

I don't know which Sylvia to be, on one hand everyone wants me to be this happy and active girl. However on the other hand, the real me is still shy and scared, I know this may sound stupid but the reason that I am so scared is because I feel that if I am not this happy bouncy and active girl, no one will accept me for the person that I really am. I wish that I could find someone who will help me through this, and accept me for who I am.