I don’t know if this question is still applicable to you, but I’ll answer it anyways, cuz others may find his thread in the future.
What I do to prepare for Yom Kippur every year, is listen to Rabbi Ephraim Waschman’s Erev Yom Kippur Teshuva drasha. Bli ayin hara, the rav has the ability to make even the most hardened heart understand what Yom Kippur is all about, and get us in the right mood. Last year, 18,000 people called up to listen to his shiur live- I don’t have the numbers for this year, but I have no doubt it’s higher than last year.
My Yom Kippur wouldn’t be complete without him.
I think the recording of his shiur is up on the Chazak phone line, which can be reached by calling 845- 356- 6665.
Believe me, it is worth your time! I have many speakers that i listen to on a constant basis, but rabbi Waschman is without a doubt, my absolute favorite.