In CBT there is a saying: "This too will pass". One is to imagine that one is on a boat in rough sea. To feel frightened or whatever will not help, because it will not take the boat out of the waves.

So please don't worry about being content with doing nothing, but try to set your goals very low. Pick up two Christmas things in the morning and two in the evening (as examples) and hang it on the three. If you want to do more that is OK, if not, that is OK as well.