Your Money or Your Life by Robin & Dominguez. This is one to read sooner rather than later. If I had read it years ago I would probably not now be living paycheck to paycheck & working in a job I hate.
...because what we need is more expensive, superfluous gadgetry in our cars that will break after the warranty expires, cannot be fixed by most owners and will cost more than the blue book value of the whole car to have repaired. I'd be happy if all four of my windows still operated.