12 Steps for the Recovering Pharisee (like me): Finding Grace to Live Unmasked, John Fischer, 2000.
This book uses a somewhat tongue-in-cheek 12-step model for recovery from the spiritually deadly disease of performance based righteousness and elitism. The medicine goes down smoothly with a healthy dose of humor.
Burroughs Gospel Worship 14 chapters (263 pages) which are each a sermon on how to properly worship God. (format PDF)
“Jeremiah Burroughs’ Gospel Worship has greatly influenced my understanding of biblical worship. It is one of the most important books I have ever read.”
–R.C. Sproul
Download: Burroughs Gospel Worship.