In very recent years the science of attention has blossomed far beyond vigilance. That science tells us these skills determine how well we perform any task. If they are stunted, we do poorly; if muscular, we can excel. Our very nimbleness in life depends on this subtle faculty. While the link between attention and excellence remains hidden most of the time, it ripples through almost everything we seek to accomplish.
— Focus: The Hidden Driver of Excellence (Daniel Goleman), Loc. 77–80