The world is made up of both the seen and the unseen.  Learning to work with the unseen - tapping into energy and mastering resonance with it - is a critical and often underlooked skill in leadership. These books offer a great way to get started.

Stalking the Wild Pendulum
by Itzahk Bentou

A New Beginning I: Handbook for Joyous Survival
by Westing H. Agor, Ph.D.

Paradigm Shifting: Guiding Evolution from the Inside 
by Jeff Carreira

Synchronicity: The Inner Path of Leadership
by Joseph Jaworski

Freedom from Judgment
by Andreas Moritz

It's Time to Wake Up
by Andreas Moritz

The Celestine Prophecy
by James Redfield

The Tenth Insight: Holding the Vision
by James Redfield

Radical Inclusivity: Expanding Our Minds Beyond Dualistic Thinking (Philosophy Is Not A Luxury - Book Series 1)
by Jeff Carreira