I would like some advice on how to stop celebrating Christmas...?

All Pagan. Easter is about the Goddess of fertility hence the rabbits. Christmas is about a Sun God.

Halloween is just ridiculous, dressing around in dead costumes to keep spirits away. Trick or treat? Supposedly if you do not give a treat these spirits will curse you.

Where is any of that in the bible?

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.