WHAT DO EXCEPTIONAL COUPLES KNOW THAT OTHERS DON’T? If roughly fifty percent of marriages fail, what about the other fifty percent—the ones that “succeed”? Are those couples who stay together necessarily happy? No, not necessarily. In fact, many marriages that remain intact are far less than ideal. A mere seven percent are really good—in fact, exceptional. These couples have much greater than average passion, happiness, longevity, and fulfillment. And the good news is, luck has nothing to do...