" Why were the highly accomplished so dogged in their pursuits? For most, there was no realistic expectation of ever catching up to their ambitions. 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. "

― Angela Duckworth , Grit: The Power of Passion and Perseverance