The Rebbe advises that in shidduchim, one must focus on core values—Yirat Shamayim and Torah observance—rather than secondary concerns. He urges the recipient to strengthen their commitment to Chassidus, influence others, and keep the daily study schedule of Chumash, Tehillim, and Tanya.
https://www.torahrecordings.com/rebbe/igroskodesh/015/010/5535