Rav Elchonon Newman is a Talmid of Mir Yerushalayim and Yeshivas Toras Simcha, where he heard mussar shmoozen directly from Rav Asher Zelig Rubinstein ZT"L. Rav Elchonon maintains a very close relationship with many Gedolei Yisroel around Yerushalayim, and is very involved in being mechazek people to learn mussar on a constant basis.