In their own eyes, they were never good enough. They were the opposite of complacent. And yet, in a very real sense, they were satisfied being unsatisfied. Each was chasing something of unparalleled interest and importance, and it was the chase—as much as the capture—that was gratifying. Even if some of the things they had to do were boring, or frustrating, or even painful, they wouldn’t dream of giving up. Their passion was enduring.
In sum, no matter the domain, the highly successful had a kind of ferocious determination that played out in two ways. First, these exemplars were unusually resilient and hardworking. Second, they knew in a very, very deep way what it was they wanted. They not only had determination, they had direction.
It was this combination of passion and perseverance that made high achievers special. In a word, they had grit.