Sex follows the pleasure principle, love follows the ideal principle, and marriage follows the reality principle. The biggest problem in marriage is how to unify the three. The American "Psychology Monthly" recently reported that in order to improve the quality of marriage, couples should develop five good habits:

Don’t complain about your partner to your friends. There will be dull moments in any marriage, and you may criticize your partner to your friends, but this cannot become a habit. People who constantly denigrate their partners to others are unreliable. Moreover, those negative comments will always reach your partner's ears, which will intensify the conflict between them.

Know when to be silent. Lisa, a psychology professor who has been married for 18 years, summed up her experience. She believes that knowing when to be silent is one of the most important things for a happy marriage. "Torturing each other without restraint will only accelerate the end of a marriage. When quarreling, one party should bravely say: Let's take a deep breath and calm down for a while."

Manage your money well and don’t borrow money. A serious family financial crisis will corrode the relationship between husband and wife. No matter how strong they are and how good their relationship is, they cannot withstand the pressure of debt.

Go to bed together. The biggest difference between a partner and friends and family is that you sleep in the same bed and have similar daily habits. Sleeping in the same bed can bring you an unparalleled sense of intimacy. Unless the working habits of the two are very different, or one of you needs to work shifts for a long time, don't sleep alone.

Have fun together. You are to laugh together three times a day. This is no joke - laughing and having fun together can create as much intimacy as a hug, a kiss, or even sex. Happy partners are those who bring joy home.