If you have ever played a competitive sport, you have probably been exhorted to give 100 percent. Or, as the sports cliché would have it, “110 percent.” And the attitude embodied in that exhortation extends well beyond the arena of athletics. Whether the field of activity be business or law, selling cars or playing tennis, giving 100 percent of one’s effort and energy is widely regarded as a virtue, if not a moral imperative.

In the present American workplace, those fortunate enough to be employed might have little choice but to give 110—or 150—percent, day in and day out, to their jobs and sponsoring institutions. But for the conduct of everyday life, a wiser guideline may be found in the ancient Chinese practice of Tai Chi. At once a martial art and a contemplative discipline, Tai Chi is rooted in the Taoist tradition. And a cardinal principle of Tai Chi…