I cried when I came back from my trip.

Since we know the difference between the environment where we are now and the environment where we are going to travel, we should feel the direction we need to work hard from our own hearts and work hard according to that goal. People can't change the environment, they can only change their mentality, values and world outlook. In short, don't think too much, and don't have to face it with an inferiority complex. You have to believe in yourself. Sure!