Not really any. I have an odd mix of introversion and extroversion and I avoid drama of any kind, so my struggles are generally pretty minor and unsuited to that medium.
Also I don't really play many character driven games.
I do like role-playing games, but most often they're ones where you essentially have total control, and if I play story-based games, I get into the character that I'm playing and don't really play it as myself.