That Incredible Christian - Ron quoted from this book by A.W. Tozer, specifically Chapter 18 (page 19 of the book). It is well worth the time it takes to read it.
What Is a Revival? by C.H. Spurgeon from the December 1866 "Sword and Trowel" - one of the best descriptions of revival I have come across.
Self Discovery - a tool by A.W. Tozer to help in detecting areas in our lives where self/idolatry may be going undetected.
My Heart Christ' Home - by Robert B. Munger - An allegory of the process of sanctification; the journey from our initial response to Christ and His work in us to bring us to the point that we surrender all and accept His call to become a living sacrifice.
Discerning Idolatry in Desire -12 Ways to Recognize the Rise of Covetousness - by John Piper. With the Bible equating covetousness to idolatry, John Piper recommends some questions to help us do some self evaluation and to detect the rise of covetousness in our own lives so we can take corrective action.
Please feel free to comment on your interaction with these resources; they are posted in the hope that they may help you live a life worthy of your calling.