Bingo. Some smart hard work, but a lot of luck. You hit a lot of "lotteries" that had less to do with hard work and more to do with luck.
I know people, including MYSELF, who worked just as hard or harder (I have 3 advanced degrees), but markets moved against others and myself. Your story of caring for elderly parents, scraping by, over-leveraging yourself to invest in a home are not unique. Nearly everyone I know has similar stories. Very few result in 8 cars including a bunch of high end ones... Most are still scraping by, but could tell your exact story except the parts where the unbelievably soaring markets in certain areas allowed millions of dollars in profits for doing little more than picking a lottery number.
You got lucky with an employer to pay tuition. But consider there are over $1 TRILLION in student loans out there with employers not paying them off. My then employer, the Army, did not pay my student loans off. Not until a few classes after me, so my junior peers did receive $65,000 of student loan repayment, but due to poor timing, I did not.

Same exact job. In 2008 they did not repay, but by 2010 they did. That still angers me. Nothing involved but lucky or unlucky timing.
At one time employers paid pensions. Now they do not. At one time, college was affordable. Now it is not. And so forth. Just luck of the draw.
You apparently hit the housing market at the right time. There is almost no ability to buy a house at a discount today. You got lucky. I bought a big beautiful brand new house in 2009 in a market that appeared to be growth. The combination of various market forces meant that I sold it at a loss after it nearly bankrupted my a decade later.