When it comes to calendar management, there’s no shortage of hacks and strategies to improve how you spend your time. For example, Zappos CEO Tony Hsieh uses an email management system called “Yesterbox.” Amazon’s Jeff Bezos prevents wasteful meetings by keeping them as short as possible. Warren Buffett simply says “no” to almost everything.
All of these techniques can help change how you spend your time. But if there’s one rule to apply to everything in time and life management, it’s the 80/20 Rule, also known as the Pareto Principle.