Dr. Nancy Adler, director of the Center for Health and Community and professor of medical psychology at the University of California at San Francisco, says:
The issue for stress is not how many demands you have, but your sense that they are manageable. A demand that you have the resources to deal with—that you have some control over—can actually be invigorating. It’s the difference between a challenge and a threat. Control goes up at each step up the social ladder and that usually works to diminish stress.