10 things I've learned from living alone.

1. Keep your room clean. It's easier when you aren't tripping over random cords, books, and clothes. You'll also be able to find things easier.
2. If you can't fry food or bake your food (chicken, eggs, etc), BOIL IT....or microwave it. It's been three years and I still burn or undercook my food. It's a tough life.
3. If you can get a job, DO IT. It's more spending money in your pocket to begin with. It may even teach you time management....maybe.
4. Try not to drink all the coffee you can get into your body... It's not really healthy and then on top of that you build a tolerance level. 
5. ALWAYS keep cash on you. You never know when you're going to need cash.
6. Don't waste time. Don't wait until last minute to get stuff done. You'll hate yourself for it.
7. Don't waste your nights not sleeping. It's better to get a goodnight's sleep instead of being sleep deprived.
8. Go to sleep early if you know you have to be up at a certain time. It'll be easier for you to wake up then.
9. Set a schedule and try following it as much as possible. It'll save you in the long run.
10. Sometimes listen to what your parents have to say. They know what they're talking about. Don't be so stubborn.