Priority Setting

The 80/20 rule, The Prado principle: 20% of what you do accounts for 80% of your results; 20% of your customers generate 80% of your sales; 20% of your products result in 80% or your profits; 20% of your transactions require 80% of your time. Prado Everything. What are the 20% of the things that I do that will make 80% of the profits both short and long term. What 20% of the things you do give biggest bang for buck?