The Pareto Principle (aka The 80/20 Rule)
80% of your income, success, and accomplishments usually comes from 20% of your activities or relationships. Learn to identify what accounts for that 20%, and do more of it. Reduce the time you spend on everything else.
It also works the other way — 80% of your problems usually comes from 20% of your relationships, clients, etc. Learn to identify who those toxic people are, and cut them loose.
