Mark Douglas Answer Questions about Trading Psychology (Trading in the Zone author)

Mark Douglas' first book, "The Disciplined Trader™" was published in 1990 and is considered an industry classic, and along with "Trading in the Zone" published in 2000, his books are considered the first books to introduce the investment industry to the concept of trading psychology ~ years before anyone even heard of that concept, much less providing coaching in this - now popular - way of approaching trading.