It absolutely could be the time of year. Many, many people have difficulties in the winter months. One of the biggest reasons is because the days are so short, and we haven't even reached the shortest daylight of the year yet (that being the first day of winter). It's one reason why seasonal affective disorder is so huge... people affected by depression only in the winter months. I have heard of people with bipolar disorder using light therapy at home for the winter months but you would have to be cautious with that as too much could send you into a hypomanic state. It's a real delicate balance but I have known people who have made it work. If you know you always have problems in the darker months maybe talking to your pdoc about getting a light box for home would be helpful. I certainly hope you are able to get a handle on things before they get worse. I think many of us here know what that's like and I personally wouldn't wish it on my worst enemy. Hang in there!!!!