What financial 'truths' or 'rules' given to you by good meaning family members, the financial press, or even sages from previous times, have you found to be false in your experience? Obviously some of this is going to be regional and time specific.
I'll start I think many of my Canadian, Australian, and even Kiwi friends would agree that the age-old advice of not spending more that 2.5-3 times your household income on a home has proven somewhat false. At least in these times. Those who have used leverage to get on the property ladder well beyond this range continue to be handsomely rewarded in these regions.
Another might be getting a degree ... any degree! Something my baby boomer parents, teachers, and guidance councilors proclaimed many times. Obviously that hasn't worked out for Gen Y/X in the same way it did for them.
Don't get me wrong, there is a lot of advice that stands the test of time, and there is a lot going for those of us seeking a MMM life, but I was curious to know what well-meaning and even researched financial advice has not proven to be true in your experience.