I love Rabbi A. Miller z”l, his legend and wise words will live forever.
Other important things:
1) Yes it’s difficult to fast, to stand and to daven so many hours, and even to do Teshuva. But you STILL gotta greet your fellow yid with A CHEERFUL SMILE!
2) Keep in mind how FORTUNATE we are to have Yom Kippur once EVERY year. can you just imagine if it would come around once a Yovel, how much we would anticipate it and cherish it!
3) Try to put in some learning during the day. Koveaya Eetim B’Torah applies even on YK.