Anger is an important, extremely unpleasant, powerful, and often destructive energy. Personally, any time I feel it, I immediately know that something I’m deeply attached to is at stake. When I feel antagonized or emotionally chafed I know that I’m clinging to some opinion or idea I hold dear in the moment. When I find myself boiling with resentment, that uncomfortable roiling around my heart prompts me to identify my personal boundaries and tells me I expect they’re about to be crossed. This kind of informative clarity might be called anger’s upside.