Wake up on time.
Get out of bed.
Find an alarm clock that works for you. No excuses.
Work on your homework ahead of time. Cramming for tests and writing papers until 4AM will not translate into good work habits.
Don't be late to stuff. Show up on time.
If you're late, own it, apologize and get working.
Use a personal planner to track your schedule. The one on your smart phone or iPod doesn't count unless you actually use it. (Note: your family's calendar in the kitchen... the one your mom updates... is also no longer sufficient.)
Read your Bible. Stop pretending you don't have time or you're too busy. If you can't read your Bible now, you certainly won't have the time to do it in 10 years.
Work hard. Work well. Work smart.
This advice is 100% free and comes with no stipulations. I'm offering a one-day special and giving this advice free to ANYONE, even if your'e not a 18-25 year old male. It's yours for the taking.