“Clutch required choosing; flow required experiencing. Two different states. Both bringing about top performance. One requires grit, the other grace. One accepting, the other a conscious decision. In many ways, the clutch-versus-flow paradigm reflects toughness. We tend to think of it as a singular method: push through, persist. But as we’ve come to realize, that’s a false constriction. Being tough means being able to choose the right strategy, given your abilities and the situation.”