Take what I give you; be willing not to have what I do not give you.

I had been praying for something I wanted very badly. It seemed a good thing to have, a thing that would make life even more pleasant than it is, and would not in any way hinder my work. God did not give it to me. Why? I do not know all of his reasons, of course. The God who orchestrates the universe has a good many things to consider that have not occurred to me, and it is well that I leave them to Him. But one thing I do understand: He offers me holiness at the price of relinquishing my own will.
"Do you honestly want to know Me?" He asks. I answer yes. "Then do what I say," He replies. "Do it when you understand it; do it when you don't understand it. Take what I give you; be willing not to have what I do not give you. The very relinquishment of this thing that you so urgently desire is a true demonstration of the sincerity of your lifelong prayer:
Thy will be done.
So instead of hammering on heaven's door for something which it is now quite clear God does not want me to have, I make my desire an offering.
The longed-for thing is material for sacrifice. Here, Lord, it's yours.
He will, I believe, accept the offering. He will transform it into something redemptive. He may perhaps give it back as He did Isaac to Abraham, but He will know that I fully intend to obey Him.
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"The Desires of My Heart" by Elisabeth Elliot A Lamp For My Feet