We think of ourselves as rational creatures and yet, (0) IN many ways, we expect things to turn 1 better than they end up being, and underestimate the likelihood of negative events. Indeed, a tendency to look on the bright side may be 2 closely linked with human survival that evolution must have made us that way. Research findings show that optimists live longer and healthier, 3 if their hopes are irrational and result 4 unwanted outcomes. In order to reach our goals we have to visualize success. However, some people argue that ceaseless optimism makes for a greater shock when things 5 wrong and that optimists need constant reassurance, which can increase anxiety. 6 than rejecting uncertainty and insecurity, they say it’s better to imagine the worst. If you think you might lose something, you start to appreciate its value. It 7 the Stoics of Ancient Greece who believed that we should not avoid negative emotions. To them, the ideal state of mind was 8 of complete acceptance of any emotions, positive or negative.