The 4-Hour Workweek by Tim Ferriss is a self-help book that promotes “lifestyle design,” challenging the traditional 9-to-5 job and deferred retirement plan. It provides a blueprint for achieving location independence and freedom by building automated businesses that generate passive income, and by using principles like the 80/20 rule and outsourcing to maximize productivity and minimize work. The book is structured around the acronym DEAL: Definition, Elimination, Automation, and Liberation.