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It's good that you don't feel good about it. [a small smile] Lashing out impulsively in anger isn't a good habit to get into, and confrontations aren't something to be enjoyed. At the end of the day, it's -- something that has to be done, not something that should be done.
If you were proud of yourself, there wouldn't be anything wrong with that. But feeling bad because you lost control and just reacted instead of dealing with it rationally... that's not a bad thing.