In recent years, grit has been upheld as the key factor in educational success.
I found this recent David Brooks commentary interesting and insightful.
Grit has been upheld as the most important attribute for success in our educational system. Grit is what helps you endure when you lack passion for a task. The fact that grit is so important to academic success, then, says a lot about our ability, or lack of ability, to spark passion and curiosity in schools the way we currently design them.