Divrei Hashkafa by Rav Mayer Twersky
Chovos Ha;evavos: Chochmo Bagoyim. Yichud -> Bechina -> Avoda -> Bitachon.
This episode of Divrei Hashkafa, featuring Rav Mayer Twersky, delves into the concepts of Chochmo Bagoyim, Yichud, Bechina, Avoda, and Bitachon.