Optimism is often promoted as the all in one cure all for, well...everything. You got a hangnail? Be more optimistic for instant relief. The kids just got sent home from school early and you have not had the chance to make dinner. Optimism is the key. Have you been diagnosed with a chronic illness. Smile and go to work this instant! But there is scientific proof that optimism can turn into a bias, shutting us off from reality, and plunging into a horrifying dystopia of false hopes and unachievable goals. I'm not calling for an end to optimism, but I do want to let you know that sometimes looking on the bright side of life for too long can leave you blinded.