In my last blog entry, I talked about how if you practice saying "I love you" to your wife once a day, then it will probably turn into more than once a day.
Similarly, for either husband or wife, if you try to do one good thing a day to him or her, then you will probably begin to do two, three, or four good things to him or her a day over time. Once-a-day turns into more-than-once-a-day. It has the opportunity to snowball.
When we do good to our spouse, simply for the sake of doing good to them, it becomes very powerful and life giving. This is hardest for struggling marriages, and that is why I say - give it a try just once a day. That way it doesn't have to be so overwhelming. Just try doing good once a day and see where it takes you.