In Making Sense of Life, physics PhD and entrepreneur Dr. Simin Cai presents a rational, structured approach to life’s biggest questions. Drawing from science, philosophy, and personal experience, he helps readers develop their own “theory of life”—a consistent, personal framework for happiness, clarity, and fulfillment. Instead of offering one-size-fits-all answers, Cai encourages readers to ask better questions: What do I value? What assumptions shape my thinking? How can I define a life worth living for me? With examples across youth, adulthood, and elderhood, Making Sense of Life is an honest, intelligent alternative to superficial self-help. It’s for readers who want depth over hype, logic over slogans, and a framework that evolves with them. It’s a must-read for anyone who values reason, clarity, and practical insight over feel-good slogans.