Not my circus. Not my monkeys. (Polish proverb) Every time you feel yourself getting drawn into other people's nonsense, repeat these words. Great to remember, because I am trying to not get sucked into peoples drama
Be proactive with your symptoms: be picky about the company you keep. "I'm very picky with whom I give my energy to. I prefer to reserve my time, intensity, and spirit exclusively to those who reflect sincerity.