Lisianthus,
Just do what has to be done!
Priorities are:
Food
Bathroom clean
You in a relaxed state, in order to enjoy tomorow!

If you haven't the energy to dust, just spray furniture polish in the air...everyone will think you've been cleaning for ages.

I had a friend who used to go to absurd lengths to be perfect...even draping the whole staircase with greenery and ribbons...she used to be up until about 2am getting it all done and was in a foul mood for days before and her husband said to me that he hated the Christmas! So, isn't it better to be relaxed and make the atmosphere happy?