When the need to stretch is not spontaneous, management needs to create an environment to foster it. In an MBO system, for example, objectives should be set at a point high enough so that even if the individual (or organization) pushes himself hard, he will still only have a fifty-fifty chance of making them. Output will tend to be greater when everybody strives for a level of achievement beyond his immediate grasp, even though trying means failure half the time. Such goal-setting is extremely important if what you want is peak performance from yourself and your subordinates.