Be forgiving and gracious (unmerited favor) toward your spouse.
Be assured that God will use the challenges you are facing in marriage as part of His process of conforming you and your spouse to the image of Christ.
Be sure you are not blaming every issue on spiritual mismatch… some conflicts are normal in any marriage. And many differences can be attributed to gender differences, not necessarily spiritual differences. (Link coming soon)
Always base your decisions on Scripture, but never “browbeat” your spouse with the Bible. Implement spiritual principles into your life in a respectful and quiet manner.
Guard your heart from emotional connections with the opposite sex. Be especially careful around someone you admire for their spiritual leadership or maturity.