Some people carry misfortune like weather. Their problems multiply, their mood spreads, and anyone close gets drafted into the chaos.
Distinguish temporary hardship from a pattern of collapse. Chronic complainers recruit rescuers and scapegoats. If you join the story, you become responsible for the ending, and the ending is rarely gratitude.
Protect your energy and your reputation. Choose circles where competence and optimism are normal, not rare. When you must deal with unhappy people, keep boundaries strict: limited time, clear terms, no emotional debt.
Misery spreads by association. You do not need to be cruel. You need to be selective. Sympathy can exist without proximity. Helping someone should not cost you your stability, your focus, or your future.