I would recommend Leadership from the Inside Out by Kevin Cashman. The major theme of this book is authentic leadership and in its pages, Cashman provides many opportunities for the reader to learn and grow personally and as a leader. Cashman argues that to develop as a leader, one must focus on whole-person development and offers many suggestions on how to accomplish this.
The book is well-grounded in research. Cashman uses a mix of practitioner resources (i.e. Training & Development magazine) and academic articles (i.e. from the Center for Creative Leadership) alongside his personal and professional experiences. This combination of sources lends credibility to the book, although sometimes it makes the reading a bit awkward.
The one major complaint I have about the book is that it introduces you to a topic, but doesn't point you in the direction to learn more. For example, Cashman suggests meditation as a means of controlling stress, but he doesn't suggest resources on meditation or tell the reader where they might learn and practice meditation.
The book is meant to be read slowly. Throughout, Cashman includes quotes from famous and important leaders that are meant to provoke thoughts. He also includes reflections at critical points in the book and at the end of each chapter. From the beginning, he encourages the reader not to read straight through, but to put down the book when an idea strikes and explore it.
This is an excellent book for the reader wanting to learn more about himself or wanting to learn more about authentic leadership. I would caution against using this book in isolation. When ideas or suggestions pique your interest, it would be helpful to have access to other resources on the subjects. All-in-all it is definitely worth the read.