Every day, in today's fast-paced world, many of us must deal with unrealistically large to-do lists that seem impossible to complete. It is possible to come at work resolved to complete the first job on the list as soon as possible, only to discover that two other chores have emerged in the meantime. In a similar vein, businesses find themselves swamped by complexity as they attempt to service multiple markets with vast arrays of diverse goods, juggling them all like a clown at a circus. Given the current state of the world, it is more vital than ever to understand what is really necessary. That is why it is critical to comprehend the 80/20 Principle, which seems to be deceptively simple yet is very effective. Taking advantage of this apparently ubiquitous mismatch between effort and reward can allow you to make better use of your time at work.