I can actually see the light at the end of the tunnel!
I'm 44 years old, but didn't start taking investments and retirement savings too seriously until 2010. On my 40th birthday something just clicked! My version of a mid-life crisis I suppose. ;-) Fortunately I've already been doing a lot of what MMM recommends like eliminating debt, maxing out my 401k, investing in Vanguard index funds, living frugally (although I'm constantly working on that... I need to eat out less!) but I just didn't have any idea how much I needed or how long I needed to work.
Currently I have about $510k in investments (two 401Ks, two Vanguard index funds) and $150k equity in a $480k home. Not counting mortgage principle and interest, my annual expenses are about $20k/year. I drive 50 miles per day round trip for work, and my medical insurance is covered by my employer. When I retire I won't drive nearly as much, but I'll have to pay for my medical insurance until Medicare kicks in at 65.
Theoretically I have almost enough in investments to meet the 4% rule, but I would like to have a bit more saved up to buy a couple of acres of land. I'd actually like to build a small off-the-grid home, but that's a whole other story for another day. If I had to guess, I think I have four or five years left working full time. I'll be 48 years old!
When I'm ready, I plan to sell my house and move to the West coast to be closer to my parents. I think I'll still work, but it will be part time doing something low stress that I enjoy. My parents are aging, and I'd like to not have to work all the time while I still have them around. Fortunately they did well, so I don't worry about needing to support them financially. My ideal retirement will be hiking with my dog, spending time with my parents, hanging out with friends, tending a massive garden, working on interesting projects, camping, fishing, etc.
I don't know why I told you guys all this. :)