I got the book in ...2008?... and it was my first foray into value-based budgeting. I tried it 'in my former life' and my partner just couldn't get on board - in my Now Life its working well, coupled with MMM focus on badassity and living well below my means.
The commonalities for me are MMM's "spend extravagantly on what you love, and scrimp everywhere else" (YMOYL's fulfillment, satisfaction, and value in proportion to my life energy), aligning spending with personal values and purpose, the reality check of how much 'stuff' I need, use, and have (Konmari also helped me in this area), not being a wage slave, and investing as passive income to live the life I want.
I actually found MMM while searching for an alternative to YMOYL's investment plan (at the time, US Bonds was their go-to).
I'm currently living Steps 1-5, and working to build my savings so I can start to invest and reach my 'crossover point' where my passive income will meet my living expenses.
I also grabbed a copy of "Getting a Life" on Amazon (used), which is a compilation of anecdotes of how people have lived YMOYL successfully.