Thus the mother in our example can keep herself calm by picturing her daughter actually getting a failing grade, and refraining from viewing that as a catastrophe. But it might not be so simple for the mother who is anxious about her children developing bad midos. But whatever the outcome, I will remind myself that I am in Hashem's hands, place my trust in Him, and make peace with whatever He decrees as my fate. There are some people who believe that they must be anxious in order to propel themselves into taking action. Both of these are wrong.
Anxiety is simply a waste of valuable energy.
Appropriate concern is all that is called for. It will convey caring, as well as propel ourselves into taking action. When no action can be taken, this still does not call for anxiety. If nothing can be done, then we work on developing an accepting attitude, as described above. Share a story with the group that you heard, that happened to you, that you read somewhere.