If you like "The Phoenix Project", you must read this - and if you didn't read it, you should read it anyway.

This book should be considered a standard reference for practical Kanban and how to manage work.
It is split in to three parts:

Part one explains the five thieves of time
Part two shows how to use Kanban to hunt down these thieves
* Part three is about creating Metrics and getting Feedback

The content is from practitioners for practitioners which makes this book one of the most valuable I've ever read.
The visuals are spot-on and the general style makes reading the book an absolute joy.