What is the Christmas spirit?

At this time of year I find it easy to lose the meaning of what this time of year is all about. The following words help keep the spirit of Christmas with me:

“True happiness comes only by making others happy—the practical application of the Savior’s doctrine of losing one’s life to gain it. In short, the Christmas spirit is the Christ spirit, that makes our hearts glow in brotherly love and friendship and prompts us to kind deeds of service.

“It is the spirit of the gospel of Jesus Christ, obedience to which will bring ‘peace on earth,’ because it means—good will toward all men.” David O. McKay

As quoted by Thomas S. Monson