Today I remembered an old but amazing book by Joe Dominguez and Vicki Robin, Your Money or Your Life.
When I read it years ago, it was a revelation the way we've been indoctrinated not only into believing we have to have certain things, but the way we spend money.
One shocking example that I still remember from the book is the husband and wife (with children) who, when they sat down and did the numbers realized they would make money if the wife stopped working. The reason: she spent more money going to the job and buying clothes for the job . . . spending money on all the things necessary for the job, she actually ended up spending more money than she made.
There are many stories like that in the book. Makes me think anyone whose thinking about ways to make more money needs to read this book first.