He who forsees calamities, suffers them twice over.
Talk about possibilities versus probabilities. That can help them calm their worries.
When the things you realistically can do to help are done, leave the matter in the hands of the Lord and worry no more. Do not feel guilty because you cannot do more. Do not waste your energy on useless worry.
Do not waste your energy on useless worry.
If you want to test your memory, try to recall what you were worrying about one year ago.