Yeah for the person that is wondering how to save 20x income, I would point them to MMM, he can share how to much better than I can.
Man I wonder how many working men and women believe that it is impossible to save money? If only they realize that it is possible, many of them would likely make strides in saving more and enable themselves to retire early (if that is their desire). There are so many people that just don't believe that they are capable of saving money, yet by doing something like setting up a direct deposit to Vanguard they can take out the guesswork and instead save without thinking about it. This is what I do, and this way I don't need to think about how much to invest, instead the decision has already been made.
I am 26 and based on inflation being estimated at 3% and returns at 8% I should hit FIRE by the age of 35.