Timothy Ferriss's book, "The 4-Hour Workweek." The book advocates for a lifestyle design approach, where individuals design their lives around their ideal work-life balance and financial freedom. The text details Ferriss's personal journey, explaining how he achieved financial independence and the freedom to travel the world, working remotely for a limited number of hours each week. The excerpt includes practical advice on how to achieve this, including outsourcing tasks, building online businesses, negotiating remote work arrangements, and embracing a "mini-retirement" lifestyle, where individuals relocate to different parts of the world for extended periods.