The field of Trading Psychology was initially thought of, and co-created by Mark Douglas and Paula T. Webb collaboratively and introduced to the trading community by them in the mid-1980s. Mark Douglas and Paula T. Webb's first book "The Disciplined TraderTM" published in 1990 is an industry classic, and along with "Trading in the ZoneTM" published in 2000, their books are the FIRST books to introduce the investment industry to the concept of trading psychology years before anyone heard of that concept, much less providing coaching in this now popular way of approaching trading. They are Wall Street moguls and considered the "Gurus" of trading psychology.