Learning is a lifelong process. However, there are SO many things that are never taught in grades K to 12 that should be taught. This thread is dedicated to those things. If there is something that you think should be taught in school please add it to this thread. It can be anything from safe sex to flossing to how to win an argument to how to fix something that is broke. I'll start us off...
Try not to spend money that you don't have.
Example: If you are already several thousand dollars in debt and you see a new pair of sweet Rims that you MUST have for your car... DON'T BUY THEM! I know it will be tough but you'll be better off in the long run.
Who's next?