I had a friend who was shy and quiet who one day decided that he wanted to be the life of the party. He tried to accomplished this by cornering anyone/everyone and talking to them for hours about topics that only he found interesting. Turns out, we all liked him much better as a shy and quiet guy. You truly can't change who you are. It reminds me of one of my favorite Mark Twain quotes: "It is better to keep your mouth shut and let people think your are a fool rather than to open it and remove all doubt."