1. Try to eat fruits and veggies. Even if fruits and vegetables don't comprise some of your favorite foods, try to incorporate at least a few of them into your diet each day.
2. Limit junk food. Junk food is fast and easy and many students end up eating a lot of it while they're on the run to class or to work. While a little fast food now and again won't really hurt you, make sure it doesn't become a habit.
3. Make it convenient to eat right. Don't make it hard for yourself to eat right. Buy healthy foods and stock your fridge and room with them to ensure they're the first things at hand when you get hungry.
4. Don't skip meals. With so much to do, it's easy to forgo eating to run off to class or the library. Don't skip meals. Set up foods you can eat on the run so you'll have the energy to keep going.
5. Indulge every once in awhile. A little treat now and then is a great way to reward yourself for eating a healthy diet. Give yourself a break and indulge in a food you love but can't eat all the time.