The primary characteristic a manager must have, declares Harold Geneen, is emotional commitment; otherwise, high standards will not be set and goals will not be met. The managers aren't interested in an organized desk or a meticulous day planner; they're looking for the right mind-set. For Charles Tandy, the man behind I, that means bringing an entrepreneurial spirit to the job. For Robert Lutz, former president and vice chairman of Chrysler, it's about right-brain thinking; that is, relying on intuition and guts, not data-driven analysis. For John Fox, founder of Minute Maid, an essential quality is courage. Great managers, he writes, must have the courage to gamble, to delegate, and to be tough. Geneen likens managing to running a marathon, and the ideas presented in create an excellent starting line.