President Obama must decide now how he wants to govern in the two years leading up to the 2012 presidential election.

In recent days, he has offered differing visions of how he might approach the country's problems. At one point, he spoke of the need for "mid-course corrections." At another, he expressed a desire to take ideas from both sides of the aisle. And before this month's midterm elections, he said he believed that the next two years would involve "hand-to-hand combat" with Republicans, whom he also referred to as "enemies."

It is clear that the president is still trying to reach a resolution in his own mind as to what he should do and how he should do it.

This is a critical moment for the country. From the faltering economy to the burdensome deficit to our foreign policy struggles, America is suffering a widespread sense of crisis and anxiety about the future. Under these circumstances, Obama has the opportunity to seize the high ground and the imagination of the nation once again, and to galvanize the public for the hard decisions that must be made. The only way he can do so, though, is by putting national interests ahead of personal or political ones.

To that end, we believe Obama should announce immediately that he will not be a candidate for reelection in 2012.

If the president goes down the reelection road, we are guaranteed two years of political gridlock at a time when we can ill afford it. But by explicitly saying he will be a one-term president, Obama can deliver on his central campaign promise of 2008, draining the poison from our culture of polarization and ending the resentment and division that have eroded our national identity and common purpose.

We do not come to this conclusion lightly. But it is clear, we believe, that the president has largely lost the consent of the governed. The midterm elections were effectively a referendum on the Obama presidency. And even if it was not an endorsement of a Republican vision for America, the drubbing the Democrats took was certainly a vote of no confidence in Obama and his party. The president has almost no credibility left with Republicans and little with independents.

The best way for him to address both our national challenges and the serious threats to his credibility and stature is to make clear that, for the next two years, he will focus exclusively on the problems we face as Americans, rather than the politics of the moment - or of the 2012 campaign.

Quite simply, given our political divisions and economic problems, governing and campaigning have become incompatible. Obama can and should dispense with the pollsters, the advisers, the consultants and the strategists who dissect all decisions and judgments in terms of their impact on the president's political prospects.

Obama himself once said to Diane Sawyer: "I'd rather be a really good one-term president than a mediocre two-term president." He now has the chance to deliver on that idea.

In the 2008 presidential campaign, Obama spoke repeatedly of his desire to end the red-state-blue-state divisions in America and to change the way Washington works. This was a central reason he was elected; such aspirations struck a deep chord with the polarized electorate.

Obama can restore the promise of the election by forging a government of national unity, welcoming business leaders, Republicans and independents into the fold. But if he is to bring Democrats and Republicans together, the president cannot be seen as an advocate of a particular party, but as somebody who stands above politics, seeking to forge consensus. And yes, the United States will need nothing short of consensus if we are to reduce the deficit and get spending under control, to name but one issue.