"A man can't spend years at one thing and not acquire a habitual attitude towards it quite unlike that of the average beginner.  The difference distinguishes the professional from the amateur.  It is the way a man looks at things that makes or loses money for him in speculative markets.  The public has the dilettante's point of view towards his own effort.  The ego obtrudes itself unduly and the thinking therefore is not deep or exhaustive.  The professional concerns himself with doing the right thing rather than with making money, knowing that the profit takes care of itself if the other things are attended to. A trader gets to play the game as the professional billiard player does - that is, he looks far ahead instead of considering the particular shot before him.  It gets to be an instinct to play for position."