Harav Yaakov Tzvi Blejer Nefesh Hachaim 102 – Shaar 4, 29 Mussar and HashkafaNefesh Hachaim https://shiurim.kzmnmb.org/wp-content/uploads/audio/shiurim/2021/07/Nefesh-Hachaim-102-Shaar-4-29.m4a