An American businessman was sitting on the dock of a small fishing village on the coast of Mexico and chatting with a Mexican fisherman who had just returned from fishing. He asked him how long it would take him to catch these fish. The fisherman said that he caught it in a short time. The American asked again, "Why don't you stay a little longer and catch more fish?" The Mexican fisherman didn't think so: "These fish are enough for my family's life!" The American asked again, "So what do you do with the rest of the day?" The fisherman explained, "Me? I wake up naturally every day, catch some fish at sea, play with the children when I come back, take a nap with my wife, hang out in the village at dusk and play guitar with my buddies. My life can be pleasant and busy! " An American is an MBA from Harvard University. He enthusiastically helps the fisherman to give advice and teach him how to continuously operate and expand his business. Finally, he told the Mexican fisherman, "After 15 to 2 years, you can earn a lot of money, and then you can retire, move to a small fishing village by the sea, wake up naturally every day, catch some fish at sea, play with the children, take a nap with your wife, and at dusk, wander into the village to drink a little wine and play guitar with your buddies!" The Mexican fisherman said doubtfully, "Isn't that what I am now?"