Question: During its development, the soul undergoes various transformations. From a religious point of view, heaven and hell are a certain stage of development of the soul. I would like to know what it means from a Kabbalistic point of view.
Answer: It is not what religions say.
Hell is a feeling of shame. Heaven is satisfaction from love. But all of this is on a spiritual level. There is nothing else.
Question: What causes shame?
Answer: Shame occurs when you see how opposite you are to the Creator.
In Preface to the Wisdom of Kabbalah, we study that the first restriction (Tzimtzum Aleph) happened because the Kli (vessel) discovered its oppositeness to the Creator, and feeling shame, it made the restriction on itself.
From the Kabbalah Lesson in Russian 6/23/19