Other than doing your best in your chosen field of study, of course, I would suggest trying to not be too concerned about how or when you have finally covered the basics expected of everyone. I did well in school until around 4th grade when homework started, and I was barely maintaining a middle-of-the-class grade average by the time I finished High School. Different people learn different things at different rates at different times in different places, so try to not let "everyone else" (as we sometimes perceive things) wind or set your personal clock.