When I got to college, on my first calculus quiz I got a C+. It's a good thing this happened right away. After that, I realized I needed to actually learn how

When I got to college, on my first calculus quiz I got a C+. It's a good thing this happened right away. After that, I realized I needed to actually learn how to study and ended up putting in a great deal of effort, unlike in high school where I could get good grades easily. I ended up graduating with all A's.