Science now sees optimism and pessimism not as good or bad outlooks you're born with but as mind-sets to adopt as situations demand. So let's be realistic, mix of pessimism and optimism will get you far.
How a person deals with rejection determines whether they will be a success.
Ah, happiness, that elusive state. Philosophers, theologians, psychologists, even economists, have long sought to define it, and since the 1990s, a whole branch of psychology—positive psychology—has been dedicated to pinning it down and propagating it.
The glass is half-empty and storm-clouds loom overhead (never with a silver lining). Pessimists get a lot of flak for negativity, and their health may take a beating, too. But they make better leaders and are more resistant to false advertising.