The true meaning of Christmas is the celebration of the birth of Jesus Christ. It is of great importance in Christianity. While it may not be as theologically important as the event sequence from Good Friday through Easter Sunday, it was an early step in getting to that point.
In modern society Christmas has often taken on a secular holiday aspect. It has drifted to a fun family event, but too often the inclusion of the birth of Jesus is overlooked, or disregarded.
It is often said that we need to keep Christ in Christmas, but there is usually no guidance in doing so. To many people adding a Nativity Set seems to be all that they need to do. It is but a beginning. Certainly, attending Christmas service is needed as a minimum of keeping Christ in Christmas. Midnight Mass is becoming less of an option, since many churches have discontinued it for safety reasons. But, those churches still celebrate Christmas at later times, and even earlier on Christmas Eve. This is a problem caused by our current society.