I Can Read You Like A Book: How to Spot the Messages and Emotions People Are Really Sending With Their Body Language by Gregory Hartley and Maryann Karinch
The Progress Principle: Using Small Wins to Ignite Joy, Engagement, and Creativity at Work by Teresa Amabile and Steven Kramer
Focal Point: A Proven System to Simplify Your Life, Double Your Productivity, and Achieve All Your Goals by Brian Tracy