The 7 Habits of Highly Effective People by Stephen Covey

The E-Myth Revisited by Michael Gerber

Purple Cow by Seth Godin

Attracting Perfect Customers by Stacey Hall & Jan Brogniez

Leadership and the One Minute Manager by Ken Blanchard

The Secret: What Great Leaders Know-and Do by Ken Blanchard,  Mark Miller, and John C. Maxwell

Never Eat Alone: And Other Secrets to Success, One Relationship at a Time by Keith Ferrazzi and Tahl Raz