Quiet: The Power of Introverts in a World That Can't Stop Talking by Susan Cain

At least one-third of the people we know are introverts. They are the ones who prefer listening to speaking, reading to partying; who innovate and create but dislike self-promotion; who favor working on their own over brainstorming in teams. Although they are often labeled "quiet," it is to introverts that we owe many of the great contributions to society--from van Gogh’s sunflowers to the invention of the personal computer.

The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change by Stephen R. Covey

In The 7 Habits of Highly Effective People, author Stephen R. Covey presents a holistic, integrated, principle-centered approach for solving personal and professional problems. With penetrating insights and pointed anecdotes, Covey reveals a step-by-step pathway for living with fairness, integrity, service, and human dignity -- principles that give us the security to adapt to change and the wisdom and power to take advantage of the opportunities that change creates