The Book that Made an Impact in My Parents' Lives

Hello Everyone,
Has any book made an impact on your life? Well, my Father has one!
It was about 10 years ago, so my father does not really remember the name of the book, and also because it was a Chinese book!
Well, back then, my father was a very shy person. He only did his work in his office, listen to his "boss". For some time, he also had stage fright. The thing about that was that, my father always minded what people said about him and how people think he was.
However, after this Chinese book, it really made a difference in his life.
The book "told" him not to be shy, but be brave. It gave my father a "You are what you think you are" mindset. My father slowly gained confidence from then on, and after about 5 years, he came out to his business! My father took the interviews to "earn" jobs not shy, but confident and thus, showing the person that he was good, and thus he had confidence. Well, my father was always good! Just that he did not show it.
Thus, what can I say? A book may be small, but it can definitely change your life! Also, I would also like to state:
Being good is useless, unless you can show it out with confidence!

Live life!
Yuding