HONG KONG: How does Nicole kidman avoid divorce?

According to the Associated Press, the Oscar winning actress spends no more than 3 days apart from her husband, country crooner Keither Urban. That is the secret to the happy marriage. She told the press in Hong Kong (where she is opening up a high end watch store and doing some work for the United Nations) that for the first time in her life, family is her priority.
Can the secret to avoiding divorce be that simple?