I see that you are in the U.S. It's the holiday season here. I always find my emotions going crazy around this time of year, no matter what's happening in my life. I think I'm just absorbing all the roller-coaster feelings from people around me. One common thing I've noticed is a lot of anger.
I just tell myself "It's just a little Christmas rage; it'll pass." Christmas is NOT the happiest time of year, probably because it's supposed to be.
By the way, I take a lot of B vitamins and fish oil. Very helpful in staying calm.