Each married couple must find their own recipe for happiness. There are, however, a few universal rules. You have to show respect for your partner's individuality, openly, specifically, but tactfully express your thoughts and desires, know how to listen to your partner, avoid routine and compromise. If we lack any of these skills, let's practice it. Let's keep an eye on happy couples, let's read the relevant reading. You can always change, if you just want to.