1. "if you propose to work on a defect, as Gurdjieff states, two months, and another defect for two months, and if there are thousands of defects, when are you going to eliminate all of them? Moreover, one defect is associated with another. Very seldom one defect appears solo. Always you will find one defect associated with another. This is why one needs to work in order, in order to duly classify them, and daily, until triumph."
Study this:
https://gnosticteachings.org/lectures-by-samael-aun-weor/96-questions-about-the-elimination-of-the-ego.html
2. Defects have nothing to do with our true nature. If you practice seriously, then eventually through meditation and internal experiences, you will experience the nature of the liberated consciousness. Then you will see that defects are unnatural, animal, and optional. They feel "inevitable" and "normal" because we are habituated to them, but that is not the reality.