Answer: A prayer is a desire that actually reaches the Creator. There are only two forces in the world: the forces of reception (attraction) and bestowal (rejection). And there is a law of the equivalence of form: In the degree of their similarity, the forces (objects) grow closer, and in the degree of their difference, they grow apart.
Since the Creator is an absolute will to bestow, He “expects” from us equivalence with Him, where the will to receive would desire to become similar to Him and also become the force of bestowal. To ensure this, He placed His spark, “the point in the heart,” the initial point of the quality of bestowal, into the will to receive, our nature. And we must cultivate it.
The Creator responds only to a prayer for this. All other kinds of prayers don’t reach Him. The Creator hears the prayer of everybody who is asking for the force of bestowal. The Creator is the law of bestowal, so he reacts to no pleas but those asking for the ability to bestow. And if we don’t ask for it, He sends us even greater suffering so that we may realize for what we should be asking.
From the Lesson on Rabash’s Article, 9/17/10