The Laws of Yom Kippur (4)

1)    Yom Kippur does not atone for those sins which one has committed between himself and his friend unless he appeases his friend. It follows that every person must check if he has other people’s money in his ownership and return it. Even if he only sinned against his friend with words alone, he must appease him, either by asking himself or by sending a messenger. (Kitzur Shulchan Aruch 131)

2)    The person from whom he is asking forgiveness, should forgive wholeheartedly, and not be cruel and not forgive, as this is not a trait of a member of Klal Yisrael. Even if he has given him much pain, he should not take revenge or bear a grudge. One who does not remove hatred from his heart on Yom Kippur, will not have his prayers listened to. Everyone who overcomes his traits and forgives will have all of his sins forgiven. (ibid)

The Laws of Yom Kippur (5) 

1)    It is a positive commandment to overindulge in meals and to eat and drink on the eve of Yom Kippur, and anyone who eats and drinks on this day with the intention of fulfilling this commandment has the merit as if he had fasted on this day. (Kitzur Shulchan Aruch 131)

2)    The custom is that the parents bless their children before entering the synagogue on the eve of Yom Kippur, as the sanctity of the holy day has already started to take effect and the gates of heaven have opened. The parents pray that their children should be sealed for good life and that their hearts should be correct with the fear of heaven. (ibid)