Start traditions.
Traditions are a proven way of creating a lasting marriage. Having a ritual you do together helps you to both look forward to something that you share. It doesn't need to be elaborate, either. Your tradition can be as simple as a walk after dinner every evening or having breakfast in bed together while reading the paper every Sunday morning.

Have a regular date night.

It is easy for couples to get stuck in a routine. You can break out of this while strengthening your relationship by making it a priority to have a regular date night each week. Many experts recommend this because it is a chance for couples to get away from the kids and strengthen their marital bonds by spending quality time together. These dates need not be expensive or elaborate; you can go to a movie, have a picnic, go for a bike ride or play tennis, or go to a museum. You can save money by doing things during the day; for example, matinees are less expensive than evening shows, and if you want to eat out, breakfast and lunch are cheaper than dinner. Keep your eyes open for free admission to outdoor concerts, museums, or other things you and your spouse would enjoy doing together.

Be polite.

Take a second to compare the way you talk to your friends or strangers with the way you talk to your spouse. Are you more polite and patient with strangers and friends than with your spouse? If you are, ask yourself why you treat total strangers better than the one you love the most. Practice good manners and speaking kindly to your spouse at home. Constant bickering, nagging, or nitpicking can destroy even the strongest marriage bonds.

Leave notes and surprises.

A little note on the bathroom mirror, car, or in a briefcase or purse that simply says, "I love you" or "Thank you" for something your spouse has done can help strengthen your bond as a couple as well as show your appreciation to your spouse for the things he or she has done for you. Things like picking up your spouse's favorite candy bar or magazine from the store will also show him or her that you're thinking about them.

Fight fair.

No marriage is without its share of arguments, but the way you handle yourself during those arguments can have a big impact on your marriage as a whole. Don't make accusatory statements such as "You never." or "You always." Give each other a chance to speak and avoid interrupting your partner when he or she is expressing their frustrations or needs. Also, if you are in the wrong, instead of making excuses, blaming your spouse, or becoming defensive, apologize. And if your spouse apologizes to you, accept the apology and move on. Don't hold grudges or bring up past arguments.

These are a few of the little things you can do to strengthen your marriage.