I quickly tire of people who manage to snatch defeat from the jaws of victory.

In the long run, the universe might be “fair” and balance out all the good with the evil. But infinity is a big number. The short run is what we’ve got to work with. Short in terms of the universe is still a billion years or so.

Going full tilt on either end does no one any good. It’s a difficult balancing act to be optimistic about the future, pessimistic enough to be concerned about the competition, careful enough to keep all the gears running, and cautious enough to make sure the company doesn’t run out of cash. And with your OTHER hand…

The ones who don’t believe can’t succeed.

Of the remaining entrepreneurs who believe whole heartedly, put optimism in the “necessary but not sufficient qualities for success” category.
Skill
Talent
Ability
Tenacity
Wisdom
Knowledge

And then, even with all those, you can still fail.

Or you could be fortunate, and succeed with little or none of the elements listed above. No guarantees, but it doesn’t hurt to stack the odds in your favor.