Ephesians 4:26-27(New International Reader's Version)
26 Scripture says, "When you are angry, do not sin."—(Psalm 4:4) Do not let the sun go down while you are still angry. 27 Don't give the devil a chance.
There is a lesson that I learned long ago that is a sure remedy for anything that ailes a relationship. Yes, it would be great if we always got along in our marriages, with our children and other friends and family, but truth is that in every realtionship there will be conflict.
After all, we are all selfish human beings that have a hard time with unconditional love. From time to time, all of us take people for granted, or we do things that make other people mad. This is especially true in the home. So, when that occurs how should we handle it?
The Bible is clear how we are to deal with one another. First and foremost we need to treat each other with love, even when at times the other person seems unlovable (it always turns around). Love is an action verb, so it requires that we take action, meaning that we do things and make choices on behalf of the other person. We might not like it all the time, but in the long run, our taking the initiative of the action first will utlimately resolve the situation.
Next, if you do get mad, make sure you handle the problem right away, or at least on the same day that it occurs. Any issue that does not get handled and "festers" overnight or over several days usually is a lot harder to resolve. Take the advice that is given in these verses of Ephesians; take care of the problem as soon as possible, and that means both of you. You might even have to corner that other person, persistently encouraging them to work through the disagreement.
Take on the blame even when it isn't your fault. Oh, and don't forget to apologize, because in the long run it will pay significant dividends. After all, don't you think that is how Jesus would handle it?