There is a funny joke says that if one is starving, he has only one problem, but if he has enough money and food, he has endless problems. It's the beginning of the new year of 2026. Many of us have might set some goals for this year. Next, we will try our best to achieve them. Then we definitely set some new goals for 2027, and so on. It's really great to enjoy the excitement of achieving a goal, but we always feel tired in other times. Maybe you think that what I talked above is not related to the topic. In fact, I just express that many pains actually come from our strong desires. It's just like the character in my joke. When a preson tries his best to get enough money, he would feel bored and lose goals of his life. In that case, he might do something very special which normal people can't do. These things become his new goals and can help him to be different from others, such as eating a fin of a shark. He may feels great, but he is just a joke in other's mind. No trade no killing is absolutely right, but what we should do to prevent the trades? The trades come from human's desires.