Tips. 1  Keep in mind that you will need lots of patience to become a pediatrician. 2  If you want to be a pediatrician, never stop chasing your dreams, even if there are setbacks along the way.3  Consider taking out a student loan or applying for a scholarship to help pay for medical school, which can be very expensive.ips. 1  Keep in mind that you will need lots of patience to become a pediatrician. 2  If you want to be a pediatrician, never stop chasing your dreams, even if there are setbacks along the way.