Unfortunately, it may be human nature to see extremes that happen and then be affected by them. It's a reason why so many people sell low in a recession or buy high in a bull market. It's also important to know that individuals' goals differ so much that the advice of "absolutely buy this stock" or "dump that index fund" don't make much sense. They could only make sense within the context of that individual's goal.
A few other rarely discussed points about our psychology toward money include how we often discount how we'll change throughout our lives and the man in the car paradox. That paradox is that people often buy luxury cars for status, but then those people aren't noticed or envied. If anything, it's only the car that is noticed or envied, and the person is forgotten.
Finally, in the final few chapters, Housel explains what he does financially, and it's nothing exotic. He owns his house outright and has a few index funds. He also ends with a brief history of how money has changed in the United States.
And herein lies another major lesson. Our financial world is so young and ever-changing that all of us need to accept how relatively young it is and be prepared for changes, although we don't know what they will be.