FYI—For Your Improvement by Michael Lombardo and Bob Eichinger

A very good overall guide for self discovery, and a great tool for coaching and developing others - a great leadership resource. This touches at a high level a lot of behavior and development topics, but does not get into the details. If you're looking for a book that dives deep into a specific behaviorial area, this is not the book for you. But what it gives is 3-4 pages on a behavior or skill, hitting it fast and hard, with guides and advise on development (covers overuse of a skill, as well as adressing gaps in a skill). It links topics/bahaviors to each other which is very helpful, and the book even leaves space in its categorizing/numbering for future skills and behaviors that may come in future editions. I've purchased this book for all the managers on my team.