If you’re a sales and marketing professional, you can save 80 percent of your time and money by zeroing in on the right 20 percent of your market. By page 5 you’ll be applying 80/20² and 80/20³ to gain 10X, even 100X the success. I highly recommend this book for business owners who are open to changing the way they think about how they manage their resources and time to get a lot more done with less effort.