Is the glass half-empty or half-full?
How you think is how you will feel. How you look at life is how life will be. Pessimists are outright unhappy folks.
"Don't ever become a pessimist," urged writer Robert Heinlein. "A pessimist is correct oftener than an optimist, but an optimist has more fun and neither can stop the march of events."
Optimists make the best of any situation. They keep the spin positive. They look for the silver lining. With optimism, you can see the bigger picture better. There are no negatives to weigh you down.
"A better world shall emerge based on faith and understanding," said five-star General Douglas MacArthur.
Optimists are passionate and inspire passion in others. Optimists know they have to power to produce positive change!
As the very wise Benjamin Franklin once said, "Do not anticipate trouble, or worry about what may never happen. Keep in the sunlight."