Have you heard of Seasonal Affective Disorder? Better known as SAD, it is very common, with over 3 million cases per year. It commonly presents itself with low feelings, low energy, and depressive thoughts at the same time each year.
While SAD can be treated with medication, natural treatment for depression like this is often just as effective. Getting enough exercise, using light therapy, and being self-aware of your feelings and how to manage them are all very important to maintaining a healthy mental state.