I chose massive overhaul, but not necessarily because I already had the huge house and boat and sports car, but because I was only 20 years old when I started reading MMM and other personal finance blogs over ten years ago. I came from a below poverty line family, so we didn't have many material things, but we didn't have any extra money either. My dad was the first one of our family to ever finish high school, and he graduated college in his late 30s (one year before I started college myself), so the bar was not set very high. I had no idea about savings, taxes, or interest, had never heard of a 401k, index funds, FIRE, or anything else related to personal finance. The most financial education I had before this site was the check book register my mom gave me when I opened my first checking account at 16 when I started working at Subway. She showed me that the income was a plus, the things I spent were a minus, and that it's not a good idea to go below zero or you pay fees. That is it.
I can guarantee that if I hadn't found this site I would be "living it up", burdened by debt, and purchasing everything I want on credit. I found this site when I realized that I had worked back to back to back restaurant and janitor jobs that I hated and couldn't imagine working my whole life for such measly money. I realized early on, before I bought a big house or a car on credit, that there was another way. Luckily, my girlfriend at the time (now DW) was on board and we have done our best to make good choices that have mostly been presented by MMM himself and the other wise souls on this forum. We did have some college debt for both of our Bachelor's and advanced degrees, but we have bought a modest house with a 20% down payment, used cars, and been pretty frugal in the big areas of life that end up costing people years and years of their life working to pay it down.
Now that I am 30, married, and working in a career I enjoy I am thankful for the past ten years of teaching I've had from this site. I am set up to be FI in an accelerated amount of time compared to the average person and will get to do whatever I want with my time soon enough. This is massively different from the life I would be living if I hadn't stumbled upon MMM.