Tempers

I seem to have developed a fierce temper sometime during the last 10 years. I'm not quite sure how it happened, I've never been a tempermental person in fact I've always considered myself calm and patient for the most part. Yet here I am, I find myself losing my temper and not sure how to get it under control. I am married to the greatest man alive, yet I find myself biting his head off for the dumbest things, what's that about? I sure wish I knew.