What's wrong with me?

I'm thinking about going round my mother's on 24th or 27th. I don't want to spend Christmas day with her. She doesn't take no for an answer.

My boyfriend's parents have Christmas as large celebration. I not want to be their either. I'm thinking of saying I am round my mother's on Christmas Day to my boyfriends family. And then I would say to my mother I am round my boyfriends family. Then spend Christmas day alone which sounds like heaven.

I'm 23 years old. I should not be behaving like this but I am so sad. What's the point of pending to be happy when I am not? The chance of speaking to my doctors round Christmas time are slim. I don't want to be like this anymore.
Updates
+1 y
Thanks guys for the help. I've been signed off work and university until the new year. My doctor said I am having a mental episode. I'll get better hopefully. Thank you again for all the help!
What's wrong with me?
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