Book review: The One Thing "The One Thing" by Gary Keller is a really great book. These are the most interesting things that I have learnt reading this book. 1) Don't do a generic "to do list” but do a "success list"; in other words, do a list with few, but really important (for you), items. You must to discover the most important thing in your life (the One Thing). You can extend this concept to many areas in life: the one thing for your career, the one thing for your relationship, the one thing for your health, and so on. But how can you discover your One Thing? 2) To discover your "One Thing", you can apply the Pareto principle (or 80/20 principle) in its extreme form. The 80/20 principle tell us that the 80% of the outcome, derive from the 20% of the process. Generally speaking, only the 20% of the thing that we do are important and contribute for the 80% in the result that we have. Don't waste time in the 80% but focus your energy in the 20%. Then, apply the Pareto principle to this 20% (so you find the 20% of the 20%). Go on in a recursive way (find the 20% of the 20% of the 20%, etc.) until you reach your One Thing. And then do it! How? 3) Use "time blocking". Time blocking is the most useful tool to achieve your goals. When you have identified your most important things, assign them a scheduled period of your time, and do the activity in a focused and undistracted way. Best if you do this as the first thing in the morning. This is only a brief description of a book full of effective hint to improve our life and our productivity.