Psychologists have shown that when you place people in stressful situations, one of the first things they do is ask themselves (usually subconsciously) two questions: What is required of me in these circumstances, and do I have the personal resources to cope with what’s required? If we scan the situation and conclude that we don’t have the wherewithal needed to handle things, that leads us to appraise the stress as a threat. If, on the other hand, we appraise the situation and determine that we have what it takes to respond adequately, then we think of it as a challenge.