Why happiness is an ability?

It was the recruitment of planning director of a multinational company, with a large number of applicants and extremely strict assessment. After layers of screening, only three outstanding people remain. Before the last exam, three candidates were sealed in a monitored room with all kinds of daily necessities and household appliances, but there was no telephone, no internet access and their mobile phones were taken away. The examiner didn't tell the three people exactly what to do, just said, let several people wait patiently for the delivery of the examination questions.

On the first day, all three people were a little excited, reading books and newspapers, watching TV and listening to music. Only when cooking, because they were not very good at some small problems, but they were in a hurry, all three people were very happy to eat. The next day, things began to change. Because they can't wait for the exam questions, some people become impetuous, and some people keep changing TV channels, flipping through books, and even rushing to eat; Someone has been frowning and walking around the room with a dignified face, and can't sleep at night ... Only one person laughs happily with the TV story, reads a book, cooks and eats with relish, and sleeps in a down-to-earth way ... Five days later, when the examiner finally invites three people out of the room, the two anxious candidates are already haggard, and only the one who has been very happy is still in high spirits. Just as the three candidates were waiting for the examiner to give the final exam questions, the examiner said the final result of the exam, and the person who could persist in a happy life was hired. The examiner explained to three equally surprised candidates: "Happiness is the ability to keep a happy attitude in any environment, and you can approach success with more confidence!" " ! "This is a true story. I am one of the two impetuous people in the story. That job search failure was the biggest gain of my life. I understand that when I set out with wisdom, I also brought happiness; With happiness, you are half successful.