First of all, Sagittarius, it is understood that you may have some very good reasons to react in an emotionally volatile manner toward someone in your life who has screwed up. They may have put you in an embarrassing or difficult position, and the stress of that might cause you to flip out. But before you let your feelings run wild, reel them in a bit. Think about how you will feel if you lash out and say something you could later regret deeply. By thinking about that, you may be able to tailor the perfect response that won't make you look bad or feel bad.