1. Credit cards are not bad, users are. Never spend more than you have.
2. Don't pay for things you'll be spending your whole life paying off. Buy what's necessary.
3. Having a savings is helpful, it could get you out of a pinch.
4. Never let your money sit without gaining interest. Don't leave all of it in checking.
5. Calculate future costs and plan out the spending of your money. Always keep track.
6. Find your passion in life. You'll make even more money if you love doing your job.