Introduces as far back as the 1790s by Vilfredo Pareto.
The Pareto principle states that, for many events, roughly 80% of the effects come from 20% of the causes. Management consultant Joseph M. Juran suggested the principle and named it after Italian economist Vilfredo Pareto, who noted the 80/20 connection while at the University of Lausanne in 1896
20% of our efforts produce 80% of results.
Also, look at The Law of the Vital Few
Vilfredo Pareto, an Italian economist is credited with it. He observed that 80 percent of the land in England (and every country he subsequently studied) was owned by 20 percent of the population.
Over the years, he and many others observed this rule in action in different spheres. Some examples:
Relationship: Twenty percent of the people you know (friends, colleagues, family) provide you with 80 percent of nurturing support and satisfaction.
Business: Twenty percent of customers will account for 80 percent of profit.
Productivity: Twenty percent of your activities will account for 80 percent of your success.
Gardening: Eighty percent of garden peas are produced by 20 percent of the peapods.
The Pareto principle is great to increase focus. Don't try to do more. Just do more of the right things. For example, out of our many maladaptive behaviors, twenty percent of it will contribute to 80 percent of all our hardship and misery. So working on just these 20 percent can greatly contribute to our personal growth. Time management is another area where the rule can be very effective. If you have a lot of work to do, break it down to specific activities and figure out what twenty percent of the tasks listed contribute to eighty percent of the results you seek. Second, give your maximum concentration to those 20 percent tasks.
So how do you know if you're working on the twenty percent that really matters?
Hints that you aren't utilising your time effectively:
With a little effort and the application of the 80-20 rule, we can save a lot of our emotional and physical energy to concentrate on stuff that really matter and enrich our life.
Seth Godin, the author, provides another useful insight in The real 80/20 rule - Most people settle for 80% and move on to the next thing. If "just enough to get the job done" is our goal, 80% is enough (and for most things in our life "just enough" is good enough). But when you really want to succeed and / or do something exceptional, focus on the remaining 20% too.
(Please note that the 20% and 80% used above are intended as rough estimates since actual proportions are rarely exactly 20% and 80%. However, it is a very useful rule of thumb to remember Pareto's principle.)