new research in psychology and neuroscience shows that it works the other way around: We become more successful when we are happier and more positive. For example, doctors put in a positive mood before making a diagnosis show almost three times more intelligence and creativity than doctors in a neutral state, and they make accurate diagnoses 19 percent faster. Optimistic salespeople outsell their pessimistic counterparts by 56 percent. Students primed to feel happy before taking math achievement tests far outperform their neutral peers. It turns out that our brains are literally hardwired to
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