The long road of life is always lost. In an era of paying attention to fighting for dad, what can we fight for the future? Changing the classic healing of hundreds of millions of teenagers in Asia, a mentor's father wrote a letter to the confused children. Reprinted 678 times in Asia, the monthly sales volume of 10 exceeded 2.5 million, and it swept the top of the major charts in 45 weeks. Many times, in school, at work, and even on emotional issues, these young people have become "losers" before they even take the first step into society-in the book, the author truthfully shows the hardships and anxieties of this generation of young people, which parents and adults have not had time to understand. The author helps them see the pain that they can't talk to others, and tells them how to find the energy to fight for the future from this pain.