Basic Advice for all students, young and old:

• Get plenty of sleep. More than you get now.
• Eat right. Drink enough clean water.
• If you must ingest alcohol or other mood-altering substances (and, really, must you?), do so in moderation.
• Train yourself to work hard, and to concentrate. Find what works for you.
• Be cheerful. Do something nice for someone else at least once in the morning, and at least once in the afternoon. Writing a letter to parents, to a friend, to a sibling or to an aging relative, counts.
• Find a way to make a difference. If you don’t have one now, join a student group that tries.
• Read through the university catalog. It has answers to most of your questions about requirements, majors, and rules of the game.