The Rebbe comforts a young educator struggling emotionally, reminding her of the immense value of drawing Jewish hearts closer to Hashem. He emphasizes that negative feelings are temporary and can be eased by internalizing hashgachah pratit and living with faith and simplicity, bringing renewed joy and strength in her mission.
https://www.torahrecordings.com/rebbe/igroskodesh/015/012/5679