Obama seemed poised to realign American politics after his stunning 2008 victory. But the economy remains worse than even the administration's worst-case scenarios, and the long legislative battles over health care reform, financial services reform and the national debt and deficit have taken their toll. Obama no longer looks invincible.

I know I made plenty of mistakes in my tenure. But one of the things that you learn is to be very careful and to protect yourself down the road a little bit, which is to say you've got to think ahead and think where is the story going to go? What are all the possible outcomes? And how do I protect the president from unexpected twists and turns in the road?

Women have a lot of power in private life. There are many men who would say, 'Hey, women already rule my life.' But with women, more is more. The more there are, the more the world gets used to seeing them. We change the culture. We begin to expand options and lead and manage.

My job is to be a spokesman - the spokesman, I suppose - for the President, for the White House, to do the daily briefings, to manage the press corps in terms of travel, day-to-day needs, access, interviews, all those issues.

You as the press secretary have to protect the president's interests and the White House's interests more broadly. And a lot of people inside the White House, as you learned, sometimes with painful experience, have competing agendas, have differing points of view, have priorities they're trying to protect.

Clinton's resilience became sort of the secret weapon of the campaign. He was never going to just give up and get out.

If people believe you're on their side, they will trust your decisions.