CSS is not just another exam. It is a door to diverse avenues of enlightenment. The entire process not only makes you look at the world around you through a whole new lens but also polishes your thought process and helps grow your mental outlook on life.
No matter how stressful the different phases of this journey get, do not forget to appreciate and make the most of the chance you have got to delve into these details and become a more informed member of the society you have been living in for years.