The Moon Festival was derived from the tradition of moon worshiping in ancient China because the moon is at its fullest on this day. The rounded shape in Chinese tradition implies good and complete. Thus the Moon Festival also symbolizes family reunion.
Regardless it is for you a lover, a friend, or yourself, it is a gift that will make the person who receives the gift feel the sweetness moment of life when looking up and appreciating the moon on this festive day.