Question: In “Preface to the Wisdom of Kabbalah” Baal HaSulam writes that the desire for pleasure, which formed in its final form, is in “this world.” What is “this world?”
Answer: It’s precisely what is written there: the state of the “receiving desire which has formed in its final form.” In reality there are two things in existence: Light and desire. Everything else are just names for these forces.
When the receiving desire undergoes changes, it finally reaches the lowest state called “this world.” This is a spiritual notion, which is why we differentiate between it and “our world,” in which we exist for now on the animate level. Only a person who feels that he is at the last stage, in the final form of the egoistic desire, determines his location as “this world.” This can already be called spiritual attainment in some sense because a person is aware of where he is according to the spiritual coordinates. But a “person from the street” does not live in “this world” yet, but still in his own world.
From the 4th part of the Daily Kabbalah Lesson 5/24/11, “Preface to the Wisdom of Kabbalah”