Stock inspirational experience copy?

I remember I met a client when I was working in the securities industry. The classic copy of this customer's stock trading is still fresh in his memory!

At that time, he wrote: entering the stock market is like entering a big war. Every time there is a war, a company, a battalion, a regiment, a division, an army and a regiment must fight like a war. Sometimes I help, sometimes I concentrate, and sometimes I take the initiative to retreat. The ultimate goal is to become Buffett.