I don't know what a light box is. Is it like a tanning bed? When I lived where there is a long period of darkness in the winter each year, I used full spectrum lights in my apartment and that was helpful, but it was many years ago. When I lived somewhere recently that was just plain gloomy for most of the year, I did try out using a tanning salon for the same reason. The tanning bed seemed to work at least somewhat. I felt better then I'm afraid I otherwise might have when I tried it. I wasn't there for years to make a comparison, though, so it was a limited experiment.
We have to become creative problem solvers, not just tolerant burden barers.