Title: Purification of the Heart: Signs, Symptoms, and Cures of the Spiritual Diseases of the Heart
Author: Hamza Yusuf
Paperback: 220 pages
Publisher: Starlatch Press, US (Jun 2004)
Maybe because I am most in need of it, but this is one of the best books I have read and will ever read, maa sha Allah.
Imam Abu Hanifa said, as quoted in this book, "If the kings knew the pleasure we are in [worshipping God and gaining knowledge of His religion], they would send their armies with swords to take it away from us."
Such is true of this book. A knowledge more valuable/pleasurable than gold or oil or any such commodity.
The book is excellently structured/sectioned to allow for broken up periodic reading and digestion in parts. Some of the "diseases" discussed include miserliness, hatred, love of the world, envy, fear of poverty, displeasure with the divine degree, negative thoughts, vanity, anger, boasting and arrogance.
Get it if you want to better yourself as a person. A must for all, irrespective of religious belief.