I believe that this, much like the Wheel in the Tarot, is a passage — a way of progressing according to the mission our Higher Self carries within. Only if we gain experience from what does not allow us spiritual elevation can we truly move forward in this dimension, advancing our own evolution and, consequently, the evolution of the universe itself, which renews through the evolution of the soul.
On the other hand, it is not so simple. The challenges are cyclical and often lead us back into the same eternal pattern. Thus, the famous ouroboros renews itself, sometimes preventing the evolution of souls.
In the end, the world is divided into two circles that form an eight, and the meaning of the eight lies in dividing the worlds, integrating them, and ultimately becoming unity.