1. College is expensive and student loans suck. So avoid taking out loans for an undergrad education (work a part time job) and try to have a pretty good idea of what career you want by your sophomore year.
2. If you're not going to grad school, make sure you're getting a degree in something useful that will actually land you a good paying job.
3. Work to live. Don't live to work. It's ok to work a boring job as long as you make a lot of money doing it. Money doesn't buy happiness per se, but sure makes it easier.
4. Invest a lot, and early.
5. Travel a lot. Study abroad in college and do it in a foreign language country and don't waste all your time there hanging out with your American friends.
6. Don't buy a new car.
7. Don't build or buy a new house unless it's the dream home you plan to die in. The depreciation is even worse than buying a new car.
8. Don't buy lots of stupid crap or develop expensive habits like drinking, smoking, drugs, golf, etc.
9. Get married, and choose someone who's better than you (preferably wealthier too, but at least a better person).
10. Don't listen to all the dumbshit advice about using CCs to rack up points or cash back. You'll end up spending and wasting a lot more money than those points are worth. One major exception to this rule is if you travel for work and are being reimbursed - then use your CCs as much as possible to rack up those points.