Well, my first thought is to make yourself a plan. If you are going to be alone then make a detailed plan of how you will spend your time. Write it out as detailed as you can. Plan what you will do, what you will eat, how will you pamper yourself, what chores you will do?
What have you been wanting to do and haven't had the time? One time I was alone for a week and I really wanted to learn how to make creme brulee, so I tried it a few times. What books, movies do you want to check out? FB stalk people from high school?!
Now, having said that, be flexible to do something spontaneous and memorable! Where can you go that you have never been before? What adventure can you have? Have you tried dining alone at a fancy restaurant? I have traveled alone and have found I enjoy being with myself sometimes!
Also, plan something significant to you that you will do to celebrate that YOU have survived this past year! That's a big accomplishment in itself, how will you reward yourself? Mani/Pedi's and a new lipstick really work for me.
Cook and eat only what YOU want. Surround yourself with things that YOU like and enjoy the peace and quiet. It sounds like it will be a short time. When the triggers come, deal with them then let them pass.
Be good to yourself, you deserve it!