Rebbe emphasizes the importance of maintaining a positive outlook toward others, especially one's own children. He encourages the recipient to stay connected with their children and to use their influence to bring them closer to Torah and mitzvot, tailoring the approach to each child's unique disposition. The Rebbe highlights that expressing love through spiritual guidance is paramount, as it impacts both this world and the next.
https://www.torahrecordings.com/rebbe/004_igros_kodesh/tishrei/777