I came across this yesterday while I was cleaning out a drawer. Here's the short version of the article by JB Collingsworth
1. Be nice to your spouse! It is amazing how relationships improve when we decide to be nice and kind and thoughtful.
2. Watch your tongue. We choose our words and they have the power to build up or tear down.
3. Turn away from temptation and evil. God knows we will have opportunity to behave badly, but He has given instructions for our good and for the success of our marriage and family.
4. Read a Proverb a day.
5. Never forget you are not on your own! You will find joy and contentment when you lean on God and allow Him to accomplish His will in your marriage, both in the good times and in the unavoidable bad times.
Put on the Lord Jesus Christ. Romans 13:14
And, I would say, remember to ask your spouse how you can pray for them today. It will bless them and you just might learn what is going on in their heart. God is good. He is all about our marriage.