Throughout the process of creation there is a constant fixed connection between the Light and the desire. The Light created the desire, tied it to itself, and it is thus tied to the Light forever. We cannot break this connection.
The created being can restrict himself and by that it’s as if he stops receiving the Light; he can do all sorts of things, but he can’t want to stop desiring that Light! This is the foundation of creation; this is the nature of the desire to receive that was created by the Creator.
So with regards to our desire to receive, the Light is always in absolute rest and we always want it! No matter how much we restrict ourselves, how many Masachim (screens) we have, we do all that above the desire to receive. The desire never disappears and always yearns for the Light. No concealments and revelations, partitions or degrees will change that; the desire exists only if it feels the Light and yearns for it. If there is no Light there is no desire.
So we can perform different actions only above the desire, since this is our nature and it’s impossible to escape from it. We can’t do anything with our desires, but only above them, meaning different coverings and corrections. The desire constantly remains since it’s the fixed matter of creation. We must understand this so as not to fight the desire to receive and try to correct the world naively, but instead we must rise above the desire and use it differently.
From the 3rd part of the Daily Kabbalah Lesson 7/2/12, The Study of the Ten Sefirot