I can't sleep, and while organizing my closet, I came across a diary I wrote in 2014. I used to have a habit of keeping a diary in my early years. As I read through it, I felt a mix of emotions. Have all my wishes come true? I found a career that suits me. I have my own house in Beijing. I've also made a lot of money. I can fly anywhere I want, go wherever I wish. But why am I not as happy as I was back then?