A new long-term study suggests that people with a generally optimistic outlook live longer than their pessimistic counterparts. Following nearly 7,000 adults since their college days in the 1960s, researchers found that “glass-half-empty” participants were 42% more likely to die of any cause than the folks who felt sunniest about the future. So where does optimism come from? Heredity and upbringing play their parts, but other studies have shown a strong correlation between a positive attitude and a practiced faith in God. 

Source: Mayo Clinic

Proceedings, Dec. 2006