I have met Novardokers who appeared to be M'kayem the Hanhaga of the Anav mentioned in Chovos Halvavos Shaar HaK'niya; to speak in a low voice and to speak little. Anava is the king of all good Middos, and a Novardoker’s main desire is to acquire this Midda [besides Bitachon]. However, a teacher, principal, a public speaker, or anyone wishing to impress the public with words of Torah and Mussar, were encouraged to be strong and impressive and eloquent.
Yet, before and/or after their performance, they need to learn Mussar to remind themselves to work for Kavod Shamayim and not themselves. And to say: “Kavod is Hevel Havalim” [again and again] when necessary. However, a person who needs to discipline others has a danger of becoming a tough Ka'asan, since the routines he constantly does eventually becomes his essence. I know a person who was warned about this by a Talmid of R’ Gershon.
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For this reason, the Alter of Slabodka used to periodically leave Slabodka [where he had lots of Kavod] and visit Kelm [where he wasn’t exactly appreciated, because of differences in Shita]. He went through terrible Bizyonos in Kelm, and he said that this saved him from the danger of Kavod he was getting by being the beloved Rebbe of Slabodka Yeshiva. Kavod can destroy a Neshama, Chas V'shalom.
In Novardok I knew an unusually Ois’ge’arbeta Yungerman [someone who worked on his Middos] who was known to give his life’s blood for his Talmidim, and indeed they loved and adored him, and respected him to the extreme. He was able to turn the worst cases into Gevaldige Chashuva Yungerleit. He told me that’s it’s all from the Hadracha he got from R’ Gershon Zatzal, and he davens before every little move he makes. His Talmidim consider him the purest of the pure in his Middos. He is constantly working on Anava, with hours and hours of Mussar. Yet, when needed I witnessed him screaming angrily in front of the whole Yeshiva, creating an uncomfortable silence.I’ve seen this several times, and he really looked infuriated; he was almost out of breath from his anger. R’ Yisroel Salanter Zatzal said that one must have Ka'as HaPanim and not Ka'as HaLev, and I am told that this person works on this.
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R’ Nosson Wachtfogel Zatzal never got angry, and he told me that he isn’t capable of having Ka'as HaPanim without Ka'as HaLev getting involved.