Just finished reading “Your Money or Your Life” (1992), by Joe Dominguez and Vicky Robin:
I first heard of the book last year from the Mr. Money Mustache site and then from many other sources in the financial independence movement. It turns out 2017 is the 25th! anniversary of the book and the authors had been organizing seminaries and workshops for years before the book, so this “thing” has been going on for a long time.