aaj ik aur baras biit gayā us ke baġhair
jis ke hote hue hote the zamāne mere
Mark Douglas, a well-known trading psychology expert, has written extensively on the topic of trading psychology and the importance of developing a strong mental game. His book, "Trading in the Zone: Mastering the Mental Discipline of Successful Trading," is a classic in the industry and has been widely read and respected by traders.