Winter is tough - Seasonal Affective Disorder - not enough sunlight, not enough Vit. D - as we get older, everything slows down and the cold feels like it is in our bones. Tough to shake it.
I am fortunate to have a small workshop in the corner of the basement, next to a wood stove. I fire up the stove, get out a wood shaft, a scale, feathers, feather chopper, fletching jig, glue, taper tool, hot melt glue, practice points or a broadhead, wipe on poly and an alcohol burner. If you accumulate the tools over time, it is not so bad. You can build an arrow with a lot less.
I make wood arrows one at a time. It is a hobby, not a contest to see how many I can produce in how short of a time.
While I am putting the arrow together, I think about how I can improve my shooting. When I am done, I end up with an arrow. When I get a break in the weather, I run outdoors and fling it. Some turn out good, others are kindling. Saxton Pope describes building dozens of arrows to get one good set. The best ones I mark for weight and keep for the Spring.
Hopefully this will inspire you. Take a break, build some arrows. Have fun.