Did someone say something about you that's pissing you off? Don't just get angry! Stop, take a deep breath, calm yourself down before you reach full-on anger mode, then re-read what they said, taking particular care not to take it personally just yet. It's possible you've misunderstood what they said, and there might be a much better way of responding than to get angry. It's possible that it is personal and they're saying what you thought they said, but don't just assume! Respond, don't react.