I was just rereading Nicolas Darvas’ How I Made $2,000,000 in the Stock Market and came across this interesting summary of his trading method and risk management approach in the author’s intro. I’d like to share it with you.
Quoth Darvas: 

“I built a fortune with serenity by avoiding premature selling yet making an exodus from most of my stocks with the use of a single tool: the trailing stop-loss. 
I have discovered no loss-free Nirvana. But I have been able to limit my losses to less than 10 percent wherever possible. My stop loss method had two effects. It got me out of the wrong stock and into the right one.”

Full passage in the image below: