Pessimists are often right, optimists are often successful

Pessimists are often right, but optimists are often successful.

Pessimists rarely succeed. They assume many approaches won't work and will yield no results, so they don't take action. Optimists, on the other hand, believe in future rewards and actually get things done—and society rewards those who do.

Original work: Pessimists Are Often Right, Optimists Often Succeed