Psychology experts say if you want to be happy, put up the Christmas decorations immediately.
People who break out the tinsel, tree and lights first may be in touch with their inner child and be more nostalgic.
Putting up decorations early might take you back to a time before the stresses of adult life.
Previous research also shows that decorating the outside of your house makes you seem more friendly to your neighbors.
Have you started putting up decorations? If not, when do you usually start?