There are five main aspects of personal health: physical, emotional, social, spiritual, and intellectual. In order to be considered "well," it is imperative for none of these areas to be neglected.
Physical
Exercise! Even walking 30 minutes a day three times a week will greatly improve your health.
Eat Healthy. Avoid fried foods, soft drinks, processed meats, and sweets. Try to include 5 servings of fruits and vegetables in your diet everyday.
Don't skip meals. Especially breakfast, it slows down your metabolic rate and can cause weight gain.
Avoid heavy episodic drinking and drug use. No more than five drinks in one sitting for men and four for women. Don't play drinking games and space drinks over time alternating with a glass of water.
Get at least 6-8 hours of sleep every night.
Emotional
Try to maintain a positive attitude even when problems arise.
Discover your personal stress reliever. Manage your time wisely because it will help lower stress.
Social
Get involved. There are a variety of clubs and organized on campus; you're bound to find something that interests you.
Know who your best friends are.
Recognize when you are in an unhealthy relationship.
Balance your social life with your academic responsibility.
Spiritual
Find a quiet place and spend time there every day.
Contemplate the meaning of your life.
If you have a religion, study and practice it.
Spend time appreciating the natural world around you.
Intellectual
Keep abreast of current affairs.
Take your school work seriously and spend time in the library.
