It sounds like you're looking for a detailed feature or breakdown of the concept of Tarbiyatun Nafs (تربية النفس) — often translated as "purification of the self" or "spiritual development" — specifically in relation to a PDF resource or guide on the topic.
Since I cannot directly access or browse specific PDF files online, I will provide you with a from a high-quality Tarbiyatun Nafs PDF (e.g., by authors like Ibn al-Qayyim, Al-Ghazali, or contemporary scholars such as Dr. Abdullah al-Darraz, Umar Sulaiman al-Ashqar, or Salih al-Munajjid).