First of all, make school your #1 priority. Keep your GPA up, study every day, and develop study skills which work for you. Choose a major that actually interests you, not just one that you think medical schools will like. Once you have all your academic ducks in a row, my advice is:
- Make an effort to meet a lot of people and choose a supportive friend group. You want to surround yourself with people who will challenge you to grow personally and intellectually and who will help you get through difficult times.
- In regards to extra-curriculars, choose something that sparks your interest. Again, don't get involved in something just because you think it will look good on your resume. Find something you can see yourself committing to for the rest of college. Dedicate time and energy to the cause, work your way up into the leadership, and become an expert on the issue. It's easier to succeed in an activity and to talk about it in an interview when you're truly passionate about it.
- Unwind and have fun on the weekends. Take care of yourself so you don't burn out.
- That being said, practice good judgement. I knew several people in college whose futures were affected by one bad decision made for the sake of a joke or just to show off. If you're going to experiment with drugs (most likely alcohol, but also weed, psychedelics, etc), as most people do, be cautious and responsible. There will be people who don't understand how delicate the pre-med process is and who try to pressure you into doing something stupid. Ignore them. You know what you want and, in my opinion, those 15 minutes of fame are not worth a red flag on your application.