Six Personality Traits Psychologists Say Lead To A Longer Life

There isn’t an exact formula for a longer life yet, though researchers think they have some pretty good guesses. 

Great genes, enough sleep, and a decent diet can go a long way if you want to reach 100, for instance. 

But some factors are less strictly physical. 

For instance, one paper found that people who had a positive view of ageing may be less likely to experience age-related decline. 

And havi...