Anyway, this definition of optimism
> or the belief that the future will be favorable because one can control important outcomes
Isn't what one colloquially means by it.
Though it is eye catching that it will make a positive impact even if you don't, actually, control important outcomes, like by not smoking
> These relations were independent of socioeconomic status, health conditions, depression, social integration, and health behaviors (e.g., smoking, diet, and alcohol use). Overall, findings suggest optimism may be an important psychosocial resource for extending life span in older adults.
Nah, that would be a fatalist
Don't know many optimistic fatalists.
pessimmist thinks the worse will come - and is grumpy about it
Pessimists look at anything good as an unexpected bonus.
All the good humorists are pessimists.