6. Unproductive at the Office?
Another day your to-do list went undone? We all hit the work “wall” from time to time. But if that wall stands twice as high when the temperature drops, SAD may be to blame. There’s no clear-cut line to measure by, but a good guideline to ask, Rock says: How much are you getting done compared to what you normally get done? If your mood is interfering with work on a consistent basis, it may be time to seek help.