What is the hardest thing in life? Poor? No; Frustrated? No; Old? Dead? Neither. I said that the hardest thing in life is not to take on a future responsibility. If people are content, they are poor but not bitter. If you can be quiet (don't make extra hopes), although frustrated, it is not bitter; Old age, illness and death are inevitable things in life. People with philosophy look normal and have nothing to suffer. Just born in this world, I will do something one day. If you don't finish what you should do, it's like having a few thousand pounds of burden on your shoulders, and there is no more pain. Why? I couldn't escape because I was scolded by that conscience. I promised to do something, but I didn't pay back the money I owed, the favor I received, and the offender didn't make amends. Even this man is almost afraid to see him in person. Even though I can't see his face, it seems that his shadow haunts me in my sleep. Why? Because I feel sorry for him, because my responsibility to him has not been lifted. Not only for one person, but also for my family, society, country and even myself. I have a responsibility to anyone who benefits from him. I have the responsibility to do what I should do and what I can do. Even now and in the future, I have made an agreement to add a layer of responsibility to myself. With this responsibility, my conscience will always supervise me. If you don't do your duty for a day, you will have a miserable night. If I don't do my duty in this life, I will go to the grave with pain. This kind of pain is not comparable to ordinary poverty, illness and old age. I can be philosophical. If there is pain, of course, there is nothing heavier than this. Conversely, what is the happiest thing?