Excellent biblical counsel from Richard Baxter:
Both husband and wife must mortify their pride and strong self-centered feelings. These are the feelings which cause intolerance and insensitivity. You must pray and labor for a humble, meek, and quiet spirit. A proud heart is troubled and provoked by every word that seems to assault your self-esteem.Do not forget that you are both diseased persons, full of infirmities; and therefore expect the fruit of those infirmities in each other; and do not act surprised about it, as if you had never known of it before. Decide to be patient with one another; remembering that you took one another as sinful, frail, imperfect persons, and not as angels, or as blameless and perfect.Remember still that you are one flesh; and therefore be no more offended with the words or failings of each other, than you would be if they were your own. Be angry with your wife for her faults no more than you are angry with yourself for your own. Have such an anger and displeasure against a fault, as will work to heal it; but not such as will cause festering and aggravation of the diseased part. This will turn anger into compassion, and will cause you to administer care for the cure.Lastly, help each other by an exemplary life. Be yourself, what you desire your husband or wife should be; excel in meekness, and humility, and charity, and dutifulness, and diligence, and self-denial, and patience.