No desire is felt until the supply is ready to appear. That is the truth.
The minute you have a desire, it is immediately in the Law of Mind, in the Law of Receiving.
The supply exists at a level that you are not aware of, but when you embrace your desire and expect its fulfillment, you draw it to you.
The Law is infinite; it does not withhold any more than the law of mathematics could withhold numbers.
You may make mistakes as you find your way, but they enable you by their correction to better know the Law.
Trust in your supply.