The Four Obsessions of an Extraordinary Executive by Patrick Lencioni
Lencioni takes the reader down an imaginative journey paralleling two companies, one with an obsession for maintaining a healthy culture and the other with an equal obsession of maintaining a healthy bottom line.
While it is expected that a leader will grow the organization, it is equally right to expect that a leader will guard the culture as well. If you practice what Lencioni preaches, you will discover that not every qualified leader is a good fit.
The four disciplines that the book identifies are 1) Build and Maintain a Cohesive Leadership Team, 2) Create Organizational Clarity, 3) Overcommunicate Organizational Clarity, 4) Reinforce Organizational Clarity Through Human Systems.
This book will shape your leadership style if you will let it. I believe it is on par with Collins business classic, Good to Great