Merry Christmas and Happy New Year KateWild! The fact that you ask yourself the question means that you are well along your way to healing. Fill your life with happy new memories to overcome those unhappy old memories.
I also belive that Steve Hassan mentions in CCMC about recovering from cult phobias by re-living memories with your new feelings. If you feared Christmas as a child, remember those moments and feel how much happier you would have been if you could have celebrated them.
Peace be with you and everyone, who you love,
Robert