Going back up to 10 years ago, here's more:
- Feel the Fear and Do It Anyway by Susan Jeffers
- You Can Negotiate Anything by Herb Cohen
- Og Mandino's University of Success By Og Mandino
- The Psychology of Success By Brian Tracy
- Who Moved My Cheese? An Amazing Way to Deal with Change in Your Work and in Your Life by Spencer Johnson, Kenneth H. Blanchard
- The Richest Man in Babylon by George S. Clason
- Influence: The Psychology of Persuasion by Robert B. Cialdini
- Anthony Robbins PowerTalk! Series - ALL of them.
- Maximum Achievement By Brian Tracy
- Worldwide Laws of Life: 200 Eternal Spiritual Principles by John Marks Templeton
- Getting Everything You Can Out of All You'Ve Got: 21 Ways You Can Out-Think, Out-Perform, and Out-Earn the Competition by Jay Abraham
- Notes from a Friend : A Quick and Simple Guide to Taking Control of Your Life by Anthony Robbins
- Kaizen by Masaaki Imai
- For People-And for Profit: A Business Philosophy for the 21st Century by Kazuo Inamori
- The Road Less Traveled by M. Scott Peck
- The Little Prince by Antoine de Saint-Exupéry
- The 7 Habits of Highly Effective People by Stephen R. Covey
- The One Minute Manager by Kenneth Blanchard, Spencer Johnson
- Emotional Intelligence by Daniel Goleman
- First, Break All the Rules: What the World's Greatest Managers Do Differently by Marcus Buckingham