Yes, that's generally the math. You save 80% of your income while learning to structure your life to live on the 20%. These people bike everywhere, eat cheaply

Yes, that's generally the math. You save 80% of your income while learning to structure your life to live on the 20%. These people bike everywhere, eat cheaply, and are all around frugal. If you can do that, then in 5 years you can retire and have to worry less about money. For me personally, that would mean sacrifices to my family's lives that I'm not willing to make, but I see the appeal and try to apply the concepts where I can.