To become a doctor, one must first complete an undergraduate degree, typically lasting four years, with a focus on relevant courses such as biology, chemistry, and physics. In the Philippines, aspiring medical students should research local schools for their specific requirements and consider early admission options if available. The MCAT is a crucial exam that should be taken before the fourth year, and while certain courses are not mandatory, they are recommended for better preparation. Volunteering and gaining practical experience are essential components of a successful medical school application, as GPA alone is not sufficient. The journey to becoming a doctor is long and requires dedication and passion for the field.