((((((((Jen)))))))))))
I can understand better now why you're so worried about this-thanks for taking the time to explain that to me. Could there be something triggering you? Did you lose some kind of a support system?
My book lists primary feelings commonly turned into anger-if it'll help you to analyze yourself- Hurt, Fearful, Insecure, Ignored, Isolated, Inadequate, Embarrassed, Rejected, Humiliated, Out of Control and Guilty.

My anger mostly comes from feeling inadequate, insecure and ignored. Sometimes I feel trapped-I guess that would go under Fearful. I'd like to suggest this notebook, if you don't mind? It's called "The Anger Workbook For Women"
I've been working on it and it's helping me.
I don't think you're going to slip back again, Jen. You're too aware of yourself and emotions now. Just the fact that you have your alarms going off and you're reacting shows that you've learned and are ready, willing and able to take care of this before it becomes a full blown breakdown. It's going to be okay and you'll work through this. You're older and hopefully wiser.
Talk to yourself like a friend and ask "what's going on?" and then listen to your gut instincts to how that friend responds to you. You'll figure it out, Jen. Don't lose your confidence. You're doing good and having a set back every now and then is to be expected.