Editing Mark McCormack (section)

==Business career==
After his Army discharge, McCormack worked as an attorney at the [[Cleveland]] law firm, [[Arter & Hadden]]. In the 1950s he helped organize one-day golf exhibitions for professionals around the United States. In 1960, McCormack founded [[IMG (company)|IMG]].<ref>{{cite book |title=Arnie and Jack: Palmer, Nicklaus, and Golf's Greatest Rivalry |first=Ian |last=O'Connor |authorlink=Ian O'Connor |year=2008 |publisher=Houghton Mifflin Harcourt |isbn=978-0618754465}}</ref>

McCormack wrote several books, including ''The Terrible Truth About Lawyers'' and ''What They Don't Teach You at [[Harvard Business School]]'', which spent 21 consecutive weeks at #1 on [[The New York Times Best Seller list]]. His annual publication ''The World of Professional Golf'', first published in 1967, included an (unofficial) world ranking system. In his book ''What They Don't Teach You at Harvard Business School,'' McCormack tells a fictionalized story{{Page needed|date=June 2012|}} of a Harvard study in which the three percent of graduates who had clear, written goals earned ten times as much as the 97 percent who didn't have clear, written goals. McCormack and numerous motivational speakers, including [[Tony Robbins]] and [[Brian Tracy]], have used various versions of this story in their presentations.<ref>{{cite web |url=http://sidsavara.com/personal-productivity/fact-or-fiction-the-truth-about-the-harvard-written-goal-study |title=Writing Down Your Goals – The Harvard Written Goal Study. Fact or Fiction? |publisher=Sidsavara.com |date=November 13, 2007 |access-date=August 19, 2015}}</ref>