Rabbi Yerucham Levovitz (5635-5696), Mashpia of the Mirrer Yeshivah, writes: Learning mussar is a great matter! What a gold mine it is for a person! The essence of mussar is to “convict oneself.” At an established time, a person should judge and convict himself, and recite an acceptance of judgment. Is there a value to this? He pushes away many types of Gehinom with this! Can there be anything of greater satisfaction than this?! (Daas Chochmah Umussar, vol. 2, p. 34)
