" Mike tells me that two key factors promote excellence in individuals and in teams: “deep and rich support and relentless challenge to improve.” When he says that, a lightbulb goes on in my head. Supportive and demanding parenting is psychologically wise and encourages children to emulate their parents. It stands to reason that supportive and demanding leadership would do the same. "

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