To keep desiring a thing can be likened to a man who has the money to buy himself a bottle of water but holds on tightly to the money, not wanting to release it. Yet he is thirsty and dying for the bottle of water.
So is the man who desires something.
You think of what you want, you then desire it. To get what you want, you must let go of your desire in the knowledge, trust and faith that you already have what it is that you want.
To let go of your desire is to pay the price for what you want.
1 Timothy 6:10 (KJV) For the love of money is the root of all evil: which while some coveted after, they have erred from the faith, and pierced themselves through with many sorrows.
This verse is saying things way beyond what you can literally read. I hope you have the eyes to see.