Unfortunately, you are not alone. So many of us suffer from the mad-rush letdown. We gear up to so much during Christmas and then when it is over, we just crash. Maybe it is not so bad to take a day or two to re-group. For a few days I find myself doing things like working on some sample blocks or just reviewing new techniques. Maybe a trip with a dear friend to a great LQS to see their new work and then a coffee/dessert time will help.
We are always here if you need to share. Hope things get better for you very quickly. I also have to guard against doldrums, especially this time of year. God Bless!