I've been divorced 4 months and separated 18 months with very little contact. I am still crazy sometimes, but it's pretty rare. It manifests in a fear of abandonment or of being ignored. At those times I have to bring the focus back to me, and it isn't always easy.
I am learning to retreat and lick my wounds when I feel hostile or misunderstood or angry. I have lashed out a few times recently and I regret the results. I stand by what I said, but I didn't have to say it so severely, and the way I acted says more about my fears and frustration than it does about the victims of my anger.
I do better when I detach. take a step back. Go for a walk. Write in a journal, play with my children, or read.