Jullan quoted Chuang Tsu by Zhuangzi
To serve one's own mind, unmoved by sadness or joy, accepting whatever happens, is the true virtue. Being a son or a subject, there is always something unavoidable that one has to do. Do what has to be done and give no thought to yourself; then you will not have time to think about loving life and hating death. Continue in this way and all will go well.
— Chuang Tsu by Zhuangzi, Gia-Fu Feng, Jane English (Page 70)