Answer: Gradually, starting from our world through 125 spiritual levels.
There are five worlds that descended into our world from the world of Ein Sof (infinity) in each of which there are five Partzufim, and in each Partzuf there are five levels for a total of 125 levels.
We will be ascending these levels until we reach the world of Ein Sof. On each level we must reverse our egoism and thus ascend. That is, all these levels mean internal changes, higher, even higher and higher above ourselves, the egoists.
Question: Where does the count begin?
Answer: The count starts at zero. When you enter a group and begin to annul before the friends in the group, then you measure everything in relation to it. This is level zero.
At the same time, you know exactly where you are, high or low, ascents, descents, and different fluctuations along the way. And so you advance along the way.
From KabTV’s “Fundamentals of Kabbalah” 10/6/19