I have TRD and have used 3 differrent light boxes, one with the latest technology. I also have SAD. None of the light boxes have helped me, although a brisk walk on a sunny day helps a lot.

I have treatment resistant depression (TRD) and it has been a part of my life since 1978.  I utilize a combination of three psychoactive medications to fight major depressive episodes and underlying dysthymia.  I have found that getting outside into the natural sun light does help to brighten my mood, as a mode of light therapy and as a method of just getting out and being in the fresh air and sun light.  Being outside in and of itself lifts my spirit.  I know that specialized lighting helps with the symptoms of SADs, but I have not read any specific research stating that indoor light therapy has a direct and positive therapeutic impact on TRD.  But I will say this; whatever works for you is what you need to do.  I believe that every one is unique when it comes to any type of illness and that unique quality carries through to what works therapeutically for each of us.  I usually discuss any and all options for therapy with my psychiatrist and would recommend the same path for you.  Good luck and best wishes. 

yes it does also get on a sleeping patteren  up at the same time  and bed at the same time even if you cant sleep lisen to the radio  what ever you like thats quieting . what ever relaxes  you and dont just sit arround the house get out do somthing you like no matter what it is.  how do i know i have bipolor depression , and i dont make saratoanion so i have to take meds for the rest of my life . i also moved to florida because winter made me feel worse now i have sun everyday and i feel  better. i hope this helps you  iam a 58 yr old woman   take care