This is how i heard the story:
The Chafetz Chayim z”l, who was known for always using his time to the fullest, (He was able to give only a minute of his life away not because he was stingy, but because he understood how much a person can achieve in one minute.)was also known to spnd his whole Yom Kippur deeply immersed in prayer and getting into thoughts of teshuvah the whole time.The night of Yom Kippur, he usually did not sleep and utilized every second of the holy day.
One Yom Kippur, after Neilah, as all the men started to go home, the Chafetz Chayim continued to pray and was ready to spend his whole night in the shul. Out of the corner of his eye he noticed one man who sat on the side looking deeply depressed. He quickly went over to the man and asked what was wrong. The man proceeded to tell him that everything was fine. The Chafetz Chayim continued to show care for the man, and throughout the ENTIRE Yom Kippur night, the Chafetz Chayim did NOT spend it praying tehillim, he did NOT spend it thinking of thoughts of tshuvah, he spent it talking to a fellow Jew, helping him and giving him chizuk as the minutes ticked by of his precious Yom Kippur!
Let us be inspired to listen and encourage our friends, lift them up when they’re down and show them they’re important in our eyes b”H!!