This excerpt is from "Think Straight: Change Your Thoughts, Change Your Life" by Darius Foroux, which offers a practical guide to improving the quality of your thoughts and, consequently, your life and career. Drawing inspiration from philosophical concepts like pragmatism, particularly the work of William James, the book argues that we can learn to control the thoughts we focus on and decide what to think. Foroux shares personal experiences and actionable advice, emphasizing that clear thinking is a skill that requires training and conscious effort to move from mental chaos to clarity. He suggests filtering thoughts based on their usefulness, avoiding assumptions and relying on facts, and understanding that life and goal achievement are often non-linear. Ultimately, the aim is to achieve inner calm by mastering the mind and taking purposeful action rather than engaging in endless, unproductive thinking.