It's important to remember how threatened Bush is by his own temperament. He is a very emotional man, subject to waves of powerful feeling—exuberance, sentimentality, anger. He cannot allow himself to get tired, for example—that makes him more vulnerable. The real reason he makes those manly "crisp decisions" is that he is in a perpetual rush to put burdensome moments behind him. And he can no longer turn to alcohol for insulation. He must rely upon his notorious schedule instead. It keeps him together, literally. Supervised and sustained by the light in Laura's loving, chiding eye, he clings to that schedule. He dare not let go.
That is what Little George means by a "balanced life."