Remember that 80% of the result comes from 20% of your time, work, or activities, and that 80% could be good enough for many tasks by focusing on the essential 20% of your efforts and activities.
16 Things I wish they had taught me in school - Positivity Blog
This is one of the best ways to make better use of your time. The 80/20 rule - also known as The Pareto Principle - basically says that 80 percent of the value you will receive will come from 20 percent of your activities. So a lot of what you do is probably not as useful or even necessary to do as you may think. You can just drop - or vastly decrease the time you spend on - a whole bunch of things.