I also am starting to feel a bit of depression and anxiety. It always happens to me this time of year, right around my birthday. I know part of the reason I start to get sick again is that the sun is lower in the sky. I'm not outside as much as I used to be therefore my vitamin D is probably getting low. My coping skills will need in to play here. I try and get outside everyday, on rainy days I use my light box. Also, I need to clean up my diet I've been eating way to many sweets!
Anyway good luck out there to anyone that is struggling. There are so many proactive things you can do to make yourself feel better, and if you need professional help please don't hesitate to get it.
Take care everyone!