Worrying in a lot of professional fields actually leads to better policies and better execution of backup plans. Being on a submarine for as long as I was, I can’t even count how many times we held drills where the reactor failed, the torpedo tubes flooded, hydraulic fluid starts spraying everywhere, a fire breaks out in the galley (kitchen), loss of our communication masts, etc. ad infinitum. If we did not train (or worry, as it were) on these casualties, then we would have sunk to the bottom the first time the ship took on flooding, the crew would have died from either the fire itself or from smoke inhalation, etc.
Worrying by itself is somewhat useless. If you are worrying about something and never go past the “thinking about it” stage, then invariably all you do is add to your stress levels. However, if you move past the “thinking about it” stage on to “doing something about it” then you have the potential to change not just your viewpoint and outcome, but possibly the viewpoint and outcome of other similar people.
