In his Art of Divine Contentment Thomas Watson gives rules for gaining contentment. Rule 12 says
Study the vanity of the creature. It matters not whether we have less or more of these things, they have vanity written upon the frontispiece of them; the world is like a shadow that declineth; it is delightful, but deceitful; it promiseth more than we find, and it fails us when we have most need of it. All the world rings changes, and is constant only in its disappointments: what then, if we have less of that which is at best but voluble and fluid? The world is as full of mutation as motion; and what if God cut us short in sublunaries? The more a man hath to do with the world, the more he hath to do with vanity. The world may be compared to ice, which is smooth, but slippery; or to the Egyptian temples, without very beautiful and sumptuous, but within nothing to be seen but the image of an ape; every creature saith concerning satisfaction, it is not in me. The world is not a filling, but a flying comfort. It is like a game at tennis; providence bandies her golden balls, first to one, then to another. Why are we discontented at the loss of these things, but because we expect that from them which is not, and repose that in them which we ought not? “Jonah was exceeding glad of the gourd.” (Jon. 4. 6) What a vanity was it? Is it much to see a withering gourd smitten? Or to see the moon dressing itself in a new shape and figure?