There's no shortage of pundits eager to tell Shinzo Abe how to shake up Japan's economy. Instead of looking to academics for advice, though, the prime minister should get into the trenches with some of the nation's more unconventional corporate heads.

Abe talks, for example, about wanting to make Japanese companies worldlier. For pointers, he should study what Tadashi Yanai has already accomplished at Fast Retailing Co., home of the Uniqlo brand. Yanai has become Japan's richest man — and the only Japanese on Time magazine's latest 100 most-influential list — largely because of his success at expanding abroad.

At home, low-cost clothier Uniqlo smartly recognized that deflation was a secular, not cyclical, phenomenon. But going global, Yanai discovered, required two skills at which Japan Inc. has traditionally failed to excel: taking risks and speaking English. Yanai shook up the company's ranks by promoting on merit rather than seniority, and revamped its marketing with edgy ad campaigns. Equally important have been Uniqlo's efforts to tap foreign talent and to hold staff meetings in English, so that executives can perform better overseas.