Bouts of rage happen to me as well. I am BP II. Most of us have "triggers" or things that just set us off and they usually manifest themselves into stress. I don't think there's any true way to explain it and we're all different. My main triggers are traffic, crowds, my mom, money, teenagers who talk ragtime smack, and injustice foisted upon me, real or imagined. I suppose the main difference between BP and others is that most people don't react in extreme fashion.

There are lots of good ways for someone with BP to manage emotion. I climb mountains, hike, go to the gym here and there, run when my knees say it's OK, and engage in activities that make me happy. I have kids as well and I understand time is an element to consider, so carve out some "you" time when you can. But what I can't do is control what happens around me so I am learning to accept it. I'm much better in traffic and with all the nitwits I need to manage on a daily basis. At the end of the day, one thing I try to do is account for the good and bad and work on improving the bad. While I'm not always successful, I'm comforted by the overall awareness and the humility of trying to get better.