I need help to stop identifying with how social I am (quiet, shy). It's driving me nuts.

I just finished reading steve's article on self-acceptance / personal growth and It's helped me alot, however I still don't exactly understand it. If anyone could help me it'd be greatly appreciated thanks!!!
"When you identify with the positional aspects of your life, you pull your ego into the picture. Your sense of self then becomes dependent on your particular position."
(how would you stop doing this?)