This is the excerpt from the book "Dumbing Down Our Kids: Why American Children Feel Good About Themselves But Can't Read, Write, or Add" by Charles Sykes, But there were some rumors (I actually received email for this) that it was from Bill Gates during one of his speech.
However, these are really the few things some grown-ups have not learnt also.
RULE 1: Life is not fair - get used to it!
RULE 2: The world doesn't care about your self-esteem. The world expects you to accomplish BEFORE you feel good about yourself.
RULE 3: You will NOT make $40,000.00/year fresh out of high school. And you won't be a vice-president with a car phone until you EARN both.
RULE 4: If you think your teacher is tough, wait until you get a boss. He won't have tenure.
RULE 5: Flipping burgers is NOT beneath your dignity. Your grandparents had a different word for burger flipping - they called it OPPORTUNITY!
RULE 6: If you mess up,it's not your parents' fault, so don't whine about your mistakes, learn from them.
RULE 7: Before you were born, your parents weren't as boring as they are now. They got that way from paying your bills, cleaning your clothes, and listening to you talk about how COOL you are. So before you save the rain forest from the parasites of your parents' generation, try delousing the closet in your room instead.
RULE 8: Your school may have done away with winners and losers, but life has not. In some schools they have abolished failing grades and will give you as many times as you need to get it right. This doesn't have the slightest resemblance to ANYTHING in real life.
RULE 9: Life is not divided into semesters. You don't get summers off and very few employers are interested in helping you find yourself. Do that on your own time.
RULE 10: TV is NOT reality. In real life people need to leave the coffee shop and go to work.
RULE 11: BE NICE TO NERDS!! Chances are you will end up working for one!