See the glass half full, it may prolong your life as much as 12 years. A study which began in the 1960s and done over 30 years and published in the Mayo Clinic Proceedings has concluded that optimists are far more likely to live longer than pessimists. Dr. Toshihiko Maruta, the chief researcher of this study stated, "The important thing is that we've proven the relationship scientifically, and made a correlation between how people see the world when they're young and how they turn out 30 years later."
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