Before becoming an excellent salesperson, one must first become a skilled investigator. You must constantly discover, track, and investigate until you fully understand your clients' every need and build close friendships with them.
Living in a land of etiquette, one should be a well-mannered person. A polite person knows how to conduct themselves, building rapport and friendships; they focus on their image and decorum when working, avoiding conflict to ensure a smoother path to success.
Life is full of twists and turns; since things cannot always go as planned, there is no need to be overly obsessed.
I am merely an excess of pity.
In this life, One should enjoy achievements during the peaks and appreciate life during the troughs.