Great stories!
I randomly saw the ERE book while browsing the online library catalogue on a bad day at work. Looked intriguing so I put it on hold. That was about 2 years ago at age 48. It led me to MMM and I became an evangelical convert. :0
I started selling everything that didn't move - and somethings that did (car, extra bikes, :)). I converted my house into two apartments, I took on side gigs and just said 'no' to eating out, new clothes, etc. Got on my bike. Negotiated down most of my bills. Learned about investing.
I think the most important thing I did was really, really look at what makes me happy. Friends, kayaking, yoga, pets (other peoples' that I take care of), hammocking, good food, being healthy, community events, reading, hiking, loving. All pretty much free!
First I hit FI (O glory day!), and when 6 months passed and I hadn't needed my regular paycheque...well I couldn't think of one good reason to go to work even one more day. So I didn't. I'll be 50 this fall.