Commitment, communication and openness are the keys to happiness in a relationship and if these three things can be applied then I am sure the relationship will be happier. Marriage is a long life journey and if you choose the wrong partner, the journey will be quite painful, so don't make the wrong choice.
Capabilities grades both sexes, people grow up differently, and building a union has unique meaning for multiple societies. They're men who wants financial hardworking women, while others would want any that'll take good care of kids. If one of them mixes up the wrong way they'll be a challenge in the economic growth of the home since the base problem is not being solved. Arguments derails focus, and spouses that nag often make the home uncomfortable for making better decisions.
In short, you need a harmonious relationship with your spouse in order to achieve your targets in life. As you are both working with your goals, you are both looking for ways on how to accomplish those goals. So it is indeed important that both of you have the same vision in life so as to make your journey much worth and easier.
Communication is indeed vital as you would know the ideas and thoughts of your partner on basically anything. Without conveying your thoughts and plans, he/she won't know your side.