I have anxiety that acts up with cold dark temperatures. Sunny days are much easier on me but actually being in the sun for too long is also a trigger for my anxiety. SO, i use those old school yellow bulbs in my rooms at home which helps a lot especially during cloudy non sunny days. you know, giving my mind an illusion of sun. Winters out here are short and mild, comparatively speaking, so i consider myself lucky that its over fast enough.