I think I kind of know how that feels. Do you at least have the blinds up and the sunlight coming in? An open window so you can feel the breeze on your face? I remember my room being a complete mess and not wanting to pull back the curtains and show it to the world. Of course, that meant the room was dark and even more depressing. If it's a struggle to go out, at least try to bring some of the outdoors in. Do you have a balcony you could sit out on? Even just feeling the sun on your skin is good.