Marriage conflict is the same as any conflict. You have to be able to deal with your emotions or your spouse's emotions before diving into the deeper stuff.
If God is at the center of your marriage and you're focused on how to make it even better, you're likely to have a happier and more successful marriage.
How can you learn to live the identity God gave you and remove the lies the devil has tattooed on your heart so it stops affecting your family and marriage?
As long as you continue to believe the lies in your heart, it will affect all your relationships—including your marriage, and it can do serious damage.