In How Will You Measure Your Life?, HBS business professor Clayton M. Christensen talks about applying his models to personal development. He asks his students to find answers to having a happy career, happy relationships, and staying out of jail (apparently this is up there, given the financial chicanery). The idea of applying a model to living is exactly what Think, Try, Learn is about, though in our case the model is the scientific method, not business ones. What’s always attracted me to models is that they teach us a way of thinking, instead of what to think. The best self-help books do this, and I treasure them. They’re the keepers. I also like his section Allocate Your Resources: “Your decisions about allocating your personal time, energy, and talent ultimately shape your life’s strategy.” My TTL take on this is Deciding What Matters, i.e., deciding what is worth your time. I think a great way to discover this is via experimentation. Try something small, evaluate its impact on your life, then decide whether to incorporate it more permanently. What other lessons from business can we take?