בעזרת ה' יתברך-יום א' פרשת תרומה, כ"ח שבט, שנת תשע"ט
This letter is regarding your child who tells you that he will die etc., it is understandable that this is extremely frightening and worrisome for you.
I request from you to forget what he said, and cease talking to your children about dying. The only reason he talks about this topic is because he hears other people talking about it, therefore, make sure it isn’t mentioned anymore. Instead talk to your children about Hashem, imbue in them that Hashem is everywhere, and anything they need or desire they can ask from Him.
The Rebbe related that as a young child he heard many stories of Tzaddikim, and this left an impression on him and he started yearning to also become a Tzaddik. When a child hears a story of a Tzaddik his pure heart starts longing to also be Ehrlich. Talk to your children about the greatness of Tzaddikim, how they lived with absolute faith in Hashem, and whatever they desired they simply asked from Him. Explain to them that this is how they brought salvation for Klal Yisroel.
If you have an extra minute during the day when your children are in school and Cheder etc., say a Kapitel of Tehillim, and empty your heart out to Hashem, tell Him all your worries and fears in your own words, talk to Him as if you are talking to a trusted friend; Daven to Him to merit holy and Ehrliche children.
May Hashem help you succeed in everything you do.