First, our emotional state determines where we direct our attention, what we remember, and what we learn. Second is decision making: when we’re in the grip of any strong emotion—such as anger or sadness, but also elation or joy—we perceive the world differently, and the choices we make at that moment are influenced, for better or for worse. Third is our social relations. What we feel—and how we interpret other people’s feelings—sends signals to approach or avoid, to affiliate with someone or distance ourselves, to reward or punish. Fourth is the influence of emotions on our health. Positive
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