Are you content? Need some spiritual encouragement in this area?
Take a dose or two from two well-known Puritans. Firs some quotes from Thomas Watson in his book The Art of Divine Contentment.
“Discontentment is to the soul as a disease is to the body: it puts it out of temper and much hinders its regular and sublime motions heavenward….[It] is not to be excused because it is natural, but resisted because it is sinful. That which should put us out of love with this sullen distemper is the contemplation of the beautiful queen of contentment.” [v]
“Here is the difference between a holy complaint and a discontented complaint. In the one we complain to God; in the other we complain of God.” 
“Murmuring is no better than mutiny in the heart; it is a rising up against God. When the sea is rough and unquiet, it casts forth nothing but foam. When the heart is discontented, it casts forth the foam of anger, impatience, and sometimes little better than blasphemy. Murmuring is nothing else but scum which boils off from a discontented heart.” 
“God’s Providence, which is nothing but the carrying out of His decrees, should be a counterpoison against discontent. God has set us in station, and has done it in wisdom.” 
“Discontent makes a man so that he does not enjoy what he possesses. A drop or two of vinegar will sour a whole glass of wine. Let a man have the affluence and confluence of worldly comforts, yet a drop or two of discontent will embitter and poison all.” 
“Why do you complain of your troubles? It is not trouble that troubles, but discontent. It is not the water outside the ship, but the water that gets within the leak which drowns it. It is not outward affliction that can make the life of a Christian sad; a contented mind would sail above these waters. But when there is a leak of discontent open and trouble gets into the heart, then it is disquieted and sinks. Do, therefore, as the mariners: pump the water out and stop this spiritual leak in your soul, and no trouble can hurt you.” 
“Thus contentment, as a honeycomb, drops sweetness into every condition. But discontent is a leaven that sours every comfort. It puts aloes and wormwood upon the breast of the creature. It lessens every mercy and triples every cross, but the contented spirit sucks sweetness from every flower of Providence. It can make something sweet out of poison.” 
“Discontent is the devil’s delight…Repentance is the joy of the angels, and discontent is the joy of the devils. As the devil dances at discord, so he sings at discontent.” [72-73]
“God makes our adversity our university.” 
And then one for good measure from another Puritan:
Labour to be spiritually minded. That is, be often in meditation of the things that are above. ‘If we be risen with Christ,’ say the Scriptures, ‘let us seek the things that are above, where Christ is, that sits at the right hand of God.’ Be much in spiritual thoughts, in conversing with things above. Many Christians who have an interest in the things of Heaven converse but very little with them; their meditations are not much upon heavenly things. Some give this as the reason why Adam did not see his nakedness, they think that he had so much converse with God and with things above sense, that he did not so much mind or think of what nakedness was. Whether that were so or not I will not say, but this I say, and am certain of, the reason why we are so troubled with our nakedness, with any wants that we have, is because we converse so little with God, so little with spiritual things; conversing with spiritual things would lift us above the things of the world. Those who are bitten or struck by a snake, it is because they tread on the ground; if they could be lifted up above the earth they need never fear being stung by the snakes which are crawling underneath. So I may compare the sinful distemper of murmuring, and the temptations and evils that come from that, to snakes that crawl up and down below; but if we could get higher we should not be stung by them. A heavenly conversation is the way to contentment.
– Jeremiah Burroughs, The Rare Jewel of Christian Contentment (pp. 219, 220)