Making Yourself Miserable to Succeed?

PeterAitch writes "Nature is reporting that expecting the worst - emotional cushioning - does not usually make you feel any better when you flunk or flop. The reported study indicates that you are just making yourself miserable. On the flip-side, people who are anxious are more likely to motivate themselves better to prepare for the forthcoming ordeal - defensive pessimists. Those with a generally sunny outlook on life expect to succeed and tend to deny responsibility when they perform badly."