Establishing and understanding boundaries are crucial to the success of a marriage, according to authors Cloud and Townsend, who cowrote the award-winning and biblically-based book Boundaries. For example, boundaries help us understand where one person ends and the other begins, the authors claim: "Once we know the boundaries, we know who should be owning the problem we are wrestling with," they write. "This issue of ownership is vital to any relationship, especially marriage." But more significantly, couples need to claim and take responsibility for the "treasures that lie within their individual borders," such as: "feelings, attitudes, behaviors, choices, limits, desires, thoughts, values, talents, and love."