Weweretoldforyearsthatpositivethinkingwasthekeytoachiev...
問題詳情：Weweretoldforyearsthatpositivethinkingwasthekeytoachievingourgoals.Nowmoreandmoreevidencesuggestsexactlytheopposite:thatspendingalotoftimethinkingaboutyourhopesanddreamsmaymakeyoulesslikelytop...