Relationships have no prescriptions, but it is a fact that a healthy relationship, beyond love needs mutual work to function long. The 4 main pillars that will help you build it are found below.

1. Never stop being curious about your partner

Ask open-ended questions and discuss all the time. Ask him to tell you stories, new or past. Ask about future dreams or relationships with parents. Talk about the children, about the emotions, but also about the current state of the country. Talk about believing in God or just listen carefully when it shows why you feel a certain way today. 

2. Conflict is inevitable. The key is to accept each other and solve the problem in the most tolerant way possible. 

The idea is to know how to react to conflicts, because if you do, they resolve themselves. Tact is everything and definitely tolerance, as long as none of you are hurt. Remember that you are not in a competition, but part of a team.

3. Successful couples forget the bad moments and remember the good times. This approach, manifests the personality of the couple in general and the good energy around them. 

4. Avoid prejudice

Try to avoid prejudice, but even in cases where it seems impossible to do so, say it tactfully and without hurting the other.

Source: Psychology Today