Always look on the bright side: being an optimist can help you live longer.

Studies have found that optimism is beneficial to your overall health, but is linked to a healthy heart and can even help ward off diseases.
Optimists often have lower blood pressure, which reduces the risk of coronary artery disease as found in a study by scientists at Harvard and Boston Universities.
People who are more optimistic also tend to have healthier behaviors – such as diet and exercise – that contribute to longevity.