The Zohar, Chapter "Shemot (Exodus)," Item 250: For fear that they would mingle the tribes with the rest of the nations… He exiled them to Egypt, who were proud and despised and loathed Israel. And they were there until the iniquity of the Amorites was full and they came to their own land, for there was no longer fear of mingling with the rest of the nations.
How do we draw closer to the desired state when we build the middle line within ourselves? The middle line which is our similarity to the Light, to the One who bestows, or the Creator happens precisely due to the state called "the Egyptian Exile" that becomes revealed within us.
My egoistic desire becomes so big that I feel that I am locked in it and that it controls me. Then, I begin to discern between myself and my nature, between myself and my egoism, or between myself and my properties.
I would like to change my properties, but I’m incapable of doing that. I see that they harm me; I realize that I corrupt myself, my life, the lives of those who are close to me, and the entire world. I put myself and everyone else in danger because I exist in this endlessly growing egoism that I can’t temper. Yet I’m unable to do anything with it.
Then, there comes a state where a person begins to realize that the force acting in him is an alien force. He doesn’t identify himself with it any longer. He begins to perceive it as his bitter enemy. This is called, "Now a new king arose over Egypt” (Exodus, 1:8). A person begins to feel that a new dominion has been revealed, and that this is not him but someone else who sets up all this for him. It could be Nature or the Creator, but it’s not him. He doesn’t know how to free himself from it.
As if from the side, a person now sees his desire to receive pleasure as something alien to him. He begins to discern the Creator as the one Who organizes all of this for him. He already has the same attitude both to the Pharaoh and to the Creator.
He then experiences an internal split, the realization that there exists the Upper Force which determines everything that happens with him. However, this revelation doesn’t happen on its own, but only after multiple hours of study, uniting with friends in the group, and working in dissemination during which the person is practically engaged in the wisdom of Kabbalah.