Economic terminology distinguishes between wealth and income. Wealth or savings is a stock variable – that is, it is measurable at a date in time, for example the value of an orchard on December 31 minus debt owed on the orchard. For a given amount of wealth, say at the beginning of the year, income from that wealth, as measurable over say a year is a flow variable. What marks the income as a flow is its measurement per unit of time, such as the value of apples yielded from the orchard per year.
While I don’t have the exact figures, I estimate that cutting back for 2 years, before buying my first home, I was able to save about $25,000 that I invested in 2011 and 2012, and that “cutting back” is now worth more than $100,000 in my investment accounts. I’m going to continue to let it grow and hopefully making that decision 2 years ago will compound in 20 years into a lot more money. It was totally worth cutting back on my three biggest expenses. Try it out.
You also need favorable stock returns. I think there’s a reason that financial freedom is a recent phenomenon, and that’s due to the stock market’s performance since 2009. It’s obvious the author has only been investing during this long bull run. He pays lip service to market drops, but doesn’t understand how frightened people get when their net worth is suddenly half what it was six months ago.