The secret to hitting well is to approach each pitch with what we might call "controlled aggression." As such, many players choose to imagine the ball as something else — a horrible teacher, an IRS agent, etc.
No less a personage than Ted Williams used this same technique his whole career, over the span of which he batted .344/.482/.634 (189 wRC+). What did Williams see instead of a ball? Easy: the shadowy spectre of Communism!