The Pareto principle applied to personal growth

"The Pareto principle (also known as the 80-20 rule, the law of the vital few, and the principle of factor sparsity) states that, for many events, roughly 80% of the effects come from 20% of the causes." [1] 

The Pareto principle (the 80-20 rule) applied to personal growth: "Spend eighty percent of your time focusing on the opportunities of tomorrow rather than the problems of yesterday." ~Brian Tracy #Pareto

[1] http://en.wikipedia.org/wiki/Pareto_principle