The first principle for maintaining a marriage is finances. As long as the husband can earn money, family conflicts will decrease by 90%. There's another point—after earning money, don't hand it over to your wife to manage. You can pay for her expenses, but absolutely don't give her control over spending. Many people don't have the ability to manage wealth. If your wife earns less money than you, it means she's not suited to handle finances. If she has her own money, she doesn't need to manage yours anyway. When women run the household, the house falls and the roof collapses.