The 4-Hour Work Week: Escape the 9-5, Live Anywhere and Join the New Rich

by Timothy Ferriss

2. Revisit Drucker—What Gets Measured Gets Managed

Remember, more customers isn’t the goal; more profit is.

9. Hyperactivity vs. Productivity—80/20 and Pareto’s Law

The 80/20 principle, also known as Pareto’s Law, dictates that 80% of your desired outcomes are the result of 20% of your activities or inputs.

10. The Customer Is Not Always Right—“Fire” High-Maintenance Customers

Apply the 80/20 principle to time consumption: What 20% of people are consuming 80% of your time?

11. Deadlines Over Details—Test Reliability Before Capability

Perfect products delivered past deadline kill companies faster than decent products delivered on time.