Hi Lisa:
The line between our self perception and the "reality" of how we project is often blurred. Take the knowledgeable teacher who really knows his stuff, but feels he's a poor public speaker and so becomes timid whenever he has to talk about a subject so familiar to him.
I think we all have weaker areas that could be improved on. All I can say about that is we should strive to both identify where we could improve, and set about working to make those weaker areas stronger.
Regards, Barry