I was surprised to hear Tom Bergeron(Funniest Home Videos etc.) admit he has an anger problem. He said the only thing that helped him was meditation. Since you admit this is centered from you, try to put a delay on your response. The old saying 'think before you talk or react' is golden advice.

You won't always be able to instantly meditate, but when you recognize the feelings....take a moment, don't say/do anything. Take some slow deep breaths and think it through....ask yourself "do I really think it's necessary to say/do this"?..."can this wait until I'm more calm"? There's free meditation exercises on the internet and they really help - when you're calm, you'll be able to handle everything better. Good luck.