[astura]

High salary and/or low expenses, invest the difference.

Most of that 2.5 million probably came from either interest or capital gains (which compounds). I've only been saving for a bit less than a decade and my increase in net worth for the last few years was greater than my total salary (before tax) the same year. [My salary is extremely low compared to Bay Area.] I save 40% of my after tax income.