Your general story of poor-to-doing-well is the majority story in the US (not sure of other countries). Income mobility is a huge thing in the US, a great feature that I see mentioned very little outside of academics. Something like 80% of people will be in the top 10% of earners at some point in their lifetime, and 98% of people will be in the top 50%. "poor" and "rich" are not static labels, and they vary greatly even year to year (Thomas Sowell has excellent data and analysis on this).
FWIW I grew up poor and I do the same as you - no debt, pay cash for cars (even expensive ones) and despite millions in the bank, I fear not being able to provide for the family. At my age, I've learned that this is a good thing, as opposed to people my age that have spent lavishly and are now wondering how to start saving for their retirement in 10 years.
FWIW I grew up poor and I do the same as you - no debt, pay cash for cars (even expensive ones) and despite millions in the bank, I fear not being able to provide for the family. At my age, I've learned that this is a good thing, as opposed to people my age that have spent lavishly and are now wondering how to start saving for their retirement in 10 years.