It's one of those inexplicable things. I joined an Advent Scarf knit-along. It's all one could want: the group is congenial, the specified yarn, Knitting Fever Indulgence 6-ply, is lovely and a LYS had it in stock, the pattern is wonderfully entertaining – and yet I'm not enjoying it. If anything, the mere thought of my scarf in progress fills me with a mysterious unhappiness.
I don't know why. There's no readily identifiable fault in our stars or in ourselves. I only know I feel it.