With success came an ever-growing burden of responsibility. I lived with a near-constant low-level anxiety that I would make a mistake that would not only threaten my career but also my brothers' - not to mention the livelihoods of many people who work with us or for us.
Part of Obama's persona is self-reliance. He's calm he's cool he's self-possessed. In many ways he has tried to define himself in opposition to Clinton's sometimes needy often undisciplined emotionalism.
