Any time these discussions come up I wish everyone would read and study Romans 14.
There are too many things we do to make ourselves appear pious. Some celebrate holidays some don't, some observe sabbath others don't, some observe rituals others don't, some go to church others don't, some drink, others don't, etc, etc, etc. Remember when some of us were in the church, if a pastor said to do this or that, that is what we did? If you were told to tithe we tithed, don't shop on Sunday we didn't, celebrate a certain day we did, dress a certain way we did. Now is no different for us, we must watch to not condemn ourselves to the law.
If God takes you out of, or something out of you, I have found, you will not have any struggle with that thing. If I decide to not celebrate christmas or any other holidays but it is a struggle in my being, then I've probably only put myself under the law of bondage. If I decide to leave church but have a struggle in my being with this, then I only put myself under that law.
When God draws you away from something I have found he takes the struggle also. I am grateful for what God has taken from me and out of me, but I also try to not judge those with their own struggles. We are all in a race and God trains us in different ways.
Getting back to your question. If you are drawn out of celebrating christmas and feel at ease and are not second guessing yourself over that decision, then you are where God has led you, if it is the opposite then you may be putting yourself under law. When God wants me to sit home christmas day, I will. Right now he has taken the religious meaning of that holiday from me, so I enjoy the time with my family and I celebrate being with them. I am not celebrating the christian meaning of the day any longer ( I still eat the meat, Rom14)
I guess what I'm trying to say is, do what God is leading you to do, but if you find yourself struggling with something then you are probably, really struggling with the beast within you, only God takes away the struggle.
This is my opinion, and I'm sticking with it... (for now).
Blessing
Craig