An interesting quote.
I met guys that were in their 30's/early 40's that were approaching being millionaires. They didn't seem to want much of anything except to work. I thought it an intriguing perception.
If I was mid 20's and strong/healthy ... I'd sell my soul to the oil/gas industry for about three years, learn some stuff and settle into a very comfortable life.
The money would go into buying an island somewhere and I'd go off and be a missionary or something.
Not many in the 20’s have the discipline to set aside that much of their salary.