In business, the 80/20 rule means that 80 percent of your business comes from 20 percent of your clients, so it makes sense that we should take extra special care of our clients. Look back through all of your clients from 2017. Who were your best clients? They could be the ones who spent the most with you, the ones who worked with you the most frequently or the the ones who spent an okay amount with you but were the exact people or companies you want to work with. These are the ones you want to pay special attention to. Here are some ways to take care of your 20 percent.