Continuing the thought from here:
There is one person I know who gives shiurim. Somehow, everything he says comes back to him. Who HE knows, who HE taught, what HE accomplished. He is not a bad person. He just sees EVERYTHING through the prism of himself and his own life.
I contrast this with Rav Moshe Shapiro ztz"l. I have been listening to him for decades. It is remarkable but he just about never ever said a word or told a story about himself or his family, who he knows, who he taught, what he accomplished. Nothing. He lost his daughter to an illness as a young girl. It shattered him [I read] but you would never know. He didn't talk about it publicly [as far as I ever heard].
So if it wasn't about HIM - then who was it about?
Hashem. Just Hashem. Totally theocentric. Not egocentrism but theocentrism. Hashem in the center and we are just here to sanctify His name. It doesn't matter what I know, who I know or how incredibly talented I am [...]. All that matters is fulfilling the will of the Borei Olam.
That should be one's attitude when learning Torah, when teaching Torah, when davening etc. etc. Of course there is nothing inherently wrong with drawing upon one's own personal experiences in order to get a point across but we can never lose sight of Who is at the center.
