“A positive mood is useful when first brainstorming, processing information, and coming up with as many ideas as possible—you don’t want to bring judgment into that, because it could stifle idea generation.
But rigor is the key to overcoming obstacles and completing tasks—and good mood doesn’t improve problem-solving, which involves judgments that almost by necessity won’t feel good: critique and evaluation, experimentation and failure. The stress that arises from problems may be unpleasant but it also motivates us to complete tasks, Davis says. In other words, negative emotions are actually beneficial to the creative process.”