Oh, what an amount of discontent is there between man and wife! If they are crossed in their possessions at land, or have bad news from across the seas, or if those whom they trusted are ruined and the like, or perhaps something in the family causes strife between man and wife, in reference to the children or servants, and there is nothing but quarrelling and discontent among them, now they are many times burdened with their own discontent; and perhaps will say one to another, It is very uncomfortable for us to live so discontented as we do. But have you ever tried this way, husband and wife? Have you ever got alone and said, 'Come, Oh let us go and humble our souls before God together, let us go into our chamber and humble our souls before God for our sin, by which we have abused those mercies that God has taken away from us, and we have provoked God against us. Oh let us charge ourselves with our sin, and be humbled before the Lord together.'? Have you tried such a way as this? Oh you would find that the cloud would be taken away, and the sun would shine in upon you, and you would have a great deal more contentment than ever you had.
I cannot recommend the book The Rare Jewel of Christian Contentment by Jeremiah Burroughs enough!
The entire book may be read here.