I highly recommend this book, The Success Principles by Jack Canfield. It is a wonderful and helpful tool and is the kind of book you can read straight through, or skip around as you desire. Each success principle is about a page or two long and each insight valuable and useful.
From YouTube: When Jack Canfield talks about perseverance, he speaks from experience. His best-selling Chicken Soup for the Soul series was rejected by over 144 publishers before going on to sell over 100 million copies. He's been a teacher, facilitator, and psychotherapist. His seminars and trainings have touched millions of individuals from welfare recipients to corporate leaders.
How what you think makes you weak or strong
Seven key areas in creating a personal vision
Two simple questions that accelerate the achievement of your goals
How to change the outcome of any event, simply by changing your response to it
The Rule of Five for achieving your "breakthrough goal"
Jack canfield is uniquely qualified to coach you on success. He's devoted more than 30 years to uncovering universal principles for achieving extraordinary outcomes. In this fast-paced, entertaining and powerful program, Jack will share his latest breakthrough principles and detail how you, too, can use them to rapidly achieve your goals in your career, your finances and your personal life.