Depressed?

In the beginning of September I moved into a basement apartment. I knew ahead of time that I wouldn't like it because I've lived in other ones and they are very depressing, no matter how you decorate : ( So when I first moved in I would make sure that I sat outside in the morning to drink my coffee and then again before I left for work in the afternoon. I was feeling pretty good. THEN ALL OF A SUDDEN...rain, cold, darkness and I couldn't sit outside anymore. So I changed my routine and started to walk on the treadmill and eat healthier and taking spirituality classes online. Now I am feeling much better and the only thing that bothers me about the rain is that my dogs don't like to go out in it