Begin preparing for your college pre-med program already in high school.
Enroll in college preparatory courses, taking as much science and math as is available. Advanced algebra, trigonometry, and geometry should be taken before calculus, and you will need to earn high grades in these classes.
Develop and practice the best study skills and time management habits you can.
Volunteer in a setting where you help people in need. Volunteering in a medical setting is ideal, but any activity that demonstrates a genuine commitment to helping people in need is valuable. It is more important to do something that you enjoy, are passionate about, and can make a long-term commitment to doing than to get involved in some aspect of medicine.