In fact, after entering the university, if you want to make progress, you have to redouble your efforts, not only in study but also in communication, and physical exercise is even more indispensable. So in fact, it is not easy to get into college.
I'm afraid you'll take what adults say seriously from the beginning. After I went to college, I just muddled along. As a result, I didn't learn anything in college for several years, and I didn't get anything. Later, I went out of society, which was worse than my peers who didn't go to college. After all, people still have a few years of social experience there. How can we talk about happiness?
Fortunately, the sooner you find out that this problem is more serious, you should have a correct attitude and study hard, and you will be happy one day.