The Rebbe explains that true connection between Jews is a bond of their souls strengthened through Torah, mitzvos, and Chassidus. Increasing in these areas brings spiritual and material blessing, especially for one serving in holy work, supported by the daily shiurim of Chumash, Tehillim, and Tanya.
https://www.torahrecordings.com/rebbe/igroskodesh/016/004/5975