Baal HaSulam, The Study of the Ten Sefirot Part 1, Chapter 3, Histaklut Pnimit: Every thing that is not in Him and does not extend directly from Him, but is rather opposite to creation itself, will be against our nature and will be hard for us to tolerate.
Question: There are some qualities that do not come directly from the upper force. Since “There is none else besides Him,” then how is this possible?
Answer: All good qualities of the Creator manifest in us inversely in accordance with our egoism.
For example, there are no efforts in the Creator, that is, hard work is not included in our root. Therefore, we yearn to be in a state of absolute rest because any effort causes us suffering. I can expend a huge amount of calories but only in order to feel good. Then everything is fine.
Question: Is there a direct connection between the root and branch?
Answer: No, it passes through a kind of filter. This is the same screen on which everything happens in reverse. When the upper light comes to the spiritual Partzuf, the Partzuf makes a restriction on it, reflects it, calculates, and only afterward, receives the light.
The same happens during the ascent from below upward. In order to appeal to the Creator, we should act in the same way. This is immense work. We want the upper light, but we cannot make an effort for it.
From the Kabbalah Lesson in Russian 7/8/18