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love the Pareto Principle (The 80/20 Rule) it helps me improve my productivity and effectiveness. it has many applications in our work and personal live. 20% effort and 80% rewards or results.
awesome comment @hilarksi you inspired me to write an article about this rule

I discovered Pareto Principle reading the The 4-Hour Workweek by Tim Ferriss
So true, and totally changed my life.

Thanks for your support