But none of those things is the cause of stress. I can prove that easily. I know well. So stress isn't caused by the events that happen around us. If that were so, Walter and Mark would be forced to react the same to the same events, but they don't.
Stress is caused by something else entirely.
The events of the day simply give us all an opportunity for the symptoms to show. If a man is healthy and well-fed, two days without food would be inconvenient and mildly uncomfortable, but not dangerous. However, these same experiences could be fatal to a man who is starving and sick. When our health is already compromised, little things can become life-threatening. The same is true with our spiritual and emotional health.