Practically everything we do in life involves negotiation. Many important issues—the political future of nations, the scope of business, the purchase of a house—hinge on negotiation. But negotiation is also an integral part of our everyday lives, whether you are resolving a quarrel, creating a family budget, or simply deciding where to eat lunch. Yet it’s easy to believe we’re usually at a disadvantage—that others are born negotiators, while we are not.