What are the things that affect your mood?

The major factor affects my mood is the weather. I think this would be adapted to many people. The clear and sunny weather makes feel happy from the morning. After I get up, open my window, feel the wind, it makes me feel refresh. Whereas, the rainy day, we face the dark outside even though it's morning. It makes me mistake the time as night still. Open the window, it just makes my interior humid, so close the window again. Because we can't make air out, I feel like caged inside the building.
To sum up, because the rainy weather makes me uneffective and feel sad, I want the sunny days every day!