80:20 Rule!
1. 80 percent of your sales volume come from 20 percent of your customers.
2. 80 percent of your profits come from 20 percent of your customers.
3. 80 percent of your results come from 20 percent daily activity.
4. 80 percent of your headaches come from 20 percent of your customers.
5. 80 percent of your satisfaction and enjoyment comes from 20 percent of the people that you spend time with.