The best financial advice tends to apply to pretty much everyone. You don’t need a spreadsheet of pros and cons and complex scenarios. What you need is a rule of thumb.
There’s no shame in using one-size-fits-all advice. A study of West Point cadets, for example, found teaching rules of thumb was at least as effective as standard personal finance training in increasing students’ knowledge and confidence as well as their willingness to take financial risks. Researchers found money rules of thumb were more effective than teaching accounting principles to small-business owners in the Dominican Republic.
Here are a dozen shamelessly simple money rules of thumb collected over the years.