Do you apologize to chairs when you bump into them? Often end up being the only one at a party who'll talk to the most boring person? Ever find yourself starting your sentences with "I hope I'm not bothering you but I was wondering if you would mind if I . . . "?
If so, this is a good time to make a shift. That's why I suggest you add some bite to your demeanor. Do what feels interesting at least as often as what's polite. Look for what advances the plot as much as what fosters harmony.
The point is not to go overboard, of course. You don't want to fling insults or arouse friction. Add fire to your presentation, but don't start conflagrations.