What are some of the keys to a successful relationship, marriage, etc.?

why do people get married? divorced? what are your plans for the future?

I think one of the keys to a successful relationship is trustworthy and responsibility toward each other.people get married because of love and to keep their love forever by a true relationship.people divorced due to they lost confidence,no sense of responsibility to each other and less communication.my plans for future is to improve my communication and be more responsible to others.also be better in solving problem.This is just my simple opinion.