Think Like Einstein: Think Smarter, Creatively Solve Problems, and Sharpen Your Judgment. How to Develop a Logical Approach to Life and Ask (Hardcover)
The Science of Self-Discipline: The Willpower, Mental Toughness, and Self-Control to Resist Temptation and Achieve Your Goals (Paperback) - '자제력 수업' 원서
The Science of Introverts (And Extroverts and Everyone In-Between): Master Your Personality, Amplify Your Strengths, Understand People, and Make More (Paperback)
The Science of Introverts: Explore the Personality Spectrum for Self-Discovery, Self-Awareness, & Self-Care. Design a Life That Fits (Paperback) - '혼자 있고 싶은데 외로운 건 싫어' 원서