Not sure if there's any one person. I think it was more a combination of growing up dirt poor and also being a major attitude case. I started working as close to full time as I could at age 12 in order to be able to buy anything. I walked my paper route until I could buy a bike, cut lawns with a push mower until I could buy a power mower, etc. Truthfully, if you count collecting bottles for the deposit money, I probably started when I was 6.
I wasn't really all that interested in retiring early most of my life, but I always hated being under anyone else's thumb, so I strove early on for FI so I could tell the Man to p!ss-off if I felt like it. By the time I was getting fairly close to FI I wandered into TMF and the ERHP. So I guess they get some credit for pointing the way to my current position as a post-career slacker.
"Good judgment comes from experience. Experience comes from bad judgement." - Will Rogers
DW and I - FIREd at 50 (7/06), living off assets