I always feel that I need to be very good at studying. If I know everything, my knowledge will be more complicated. I always feel that I know everything and am amazing. It is easy to give yourself the illusion that you have high ambitions and low ambitions, and ignore many things that you don't pay attention to. This is not conducive to future development and it is easy to take too many detours, so I think it is not a good thing to know everything.