I stopped using my light box a couple of days ago after I got super irritable. I don't know if it is related, but I felt like I needed to try something because it was getting out of control. My irritability has decreased, but now I feel very tired, lethargic, apathetic. Just really blah. I cannot tell if I am under the weather or depressed. I hope it was all a coincidence because I really want to use the light box and ward off the seasonal depression.