Motivation

Awaken the Giant Within: how to take immediate control of your mental, emotional, physical & financial destiny!
by Anthony Robbins.
The creator of acclaimed personal achievement programs and the author of the bestselling Unlimited Power reveals the proven steps to self-mastery. Robbins shares the secrets of his exclusive "Date with Destiny" seminars, describing how unconscious beliefs control our behavior and how we can make immediate changes to accomplish our goals.

Daily Reflections for Highly Effective People
by Stephen J. Covey.
by the author of The 7 Habits of Highly Effective People.

How to Win Friends and Influence People
by Dale Carnegie.
Simply, this is one of the classics.

Unlimited Power
by Anthony Robbins.