“Optimism is usually defined as a belief that things will go well. But that’s incomplete. Sensible optimism is a belief that the odds are in your favor, and over time things will balance out to a good outcome even if what happens in between is filled with misery. And in fact you know it will be filled with misery. You can be optimistic that the long-term growth trajectory is up and to the right, but equally sure that the road between now and then is filled with landmines, and always will be. Those two things are not mutually exclusive.
Optimism and pessimism can coexist. If you look hard enough you’ll see them next to each other in virtually every successful company and successful career. They seem like opposites, but they work together to keep everything in balance.”