During the Premarital classes one thing that was mentioned is the Triangle in marriage. At the time some lessons just seemed easy and theoretical. However once I got married this is one of the things that I have experienced practically in my marriage.
The triangle in marriage states that the two bottom corners is the husband and wife, and the top most corner is God. The closer the husband and wife get to God the closer they get to each other. For example, once you get closer to God, you desire to express your love to Him, by following His commands. One of the commands is in 1st Corinthians 13 talking about true love.
In true love, one does not keep a record of wrong, neither does one become easily angered, one is not jealous and on and on it goes on to speak about love. Once one practices true love, then they get closer to their own spouse. This is just one of the examples, however I have realized the closer one gets to God the better they are able to understand and treat their spouse. In return it is easier for the other party to reciprocate whether they know God or not.
I have also realized the journey of salvation is very independent. You can have devotions as a family, but one still needs their quiet time with the Lord. No one can seek God on your behalf, it is a personal responsibility.