Negative Thought Loop

I have a bank of experiences that I replay in my mind over and over. They are all situations in which I felt slighted, overlooked, neglected, picked last, powerless or angry. When I start getting upset about something, they all come out to take their turn in the negative experience retinue. I relive the event, my feelings about it, and try to figure out what clever thing I could have said or done to protect myself. I’ll even do this when I’m enjoying a pleasant experience sometimes. I’d like to lay them all to rest. But most of all I want to feel power over them. I want to win in those situations.