What is it?
The 80/20 Rule, a.k.a. the Pareto principle, stems from observations made by Italian economist Vilfredo Pareto in 1906, including the fact that 80% of the land in Italy was owned by 20% of the population. Or, generalizing to other situations, roughly 80% of consequences come from 20% of the causes.
But why do I like it so much, and why it is your friend?
Because it can help you make decisions…and not worry so much…and get stuff done!