While at the Mir in NY I heard once from the head of the kollel there a musar "shmooze" on Tuesday night. He is the grandson of the Mashgiach of Ponovitch. And that was the very start of his giving a Musar talk on Tuesday night. It was devoted to the subject of "to bear a yoke with your friend".That is one of the 48 means by which Torah is acquired. He had heard from his grandfather that that is the most important of them all.