It is a sense of frustration to see that others have achieved great success and they seem to have nothing to be proud of, and feel that they are particularly useless by comparison. Some people have broken up with their long-term lovers. According to previous habits, such as going out to see a movie on weekends, now time is empty and can only be filled with emptiness. Before the student party was exam week, there were many subjects to review for exams, so I was very busy. Now it's easy at once. When the taut string is broken, there is no direction.
There is also loneliness, loneliness and emptiness are generally produced together, and feeling lonely is easy to be empty.