3924 – Rejecting Despair Even When Self-Criticism Feels Justified – דחיית היאוש אפילו כאשר הביקורת העצמית נראית מוצדקת

The Rebbe writes that even if one's negative self-assessment were entirely accurate, feelings of despair and despondency are completely rejected. Instead, one should use such feelings to inspire positive action, seek Divine assistance, and help others draw closer to Torah. https://www.torahrecordings.com/rebbe/igroskodesh/012/003/3924