Does Optimism actually make a difference, or is it overhyped?

Dispositional optimism has one of the more consistent bodies of prospective evidence linking a psychological trait to mortality. Weighing the data: Optimism looks well-supported and consequential — the evidence is rated strong (80/100) and its estimated impact on longevity is also rated highly (55/100), making it one of the more solidly-backed choices on Vitaebase.