A salik wrote, I am still on Tableegh-e-Deen. MashaAllah the book is amazing. Imam Ghazali was truly a genius and translator Maulana Aashiq Elahi (Allah have mercy on them, and bless them tremendously). The book does set the bar really high. I have read almost 90 pages of the book. I think this is a book that one should refresh from time to time.
It has to be read like a textbook. Read two or three pages a day at the most. Underline, high-light and take notes. Especially, those items that are not in your knowledge and practice. Start to implement them right away. Everyday review the last section read and then to proceed to the next.
Reviewed and approved by sanadi wa sanadi Mufti Mohammed Taqi Usmani (Allah protect & preserve him)