Answer: You will not lose yourself. On the contrary, you will find yourself.
Now you are like a little animal and are only concerned about that. Therefore, at the end of his life, a person experiences great disappointment when he asks himself, “What was I living for? Where is all of this going? What will be left of me?”
Nothing will be left. But attainment of the upper world opens and develops within you a perspective of infinite goodness.
From the Kabbalah Lesson in Russian 11/20/16