Anxiety...otherwise emotionless?

I have been living with depression for years. The symptoms were always enhanced during fall/winter seasons. The first few years were fine. I had the ability to cope with those level of depression and it wouldn't affect my daily life seriously. However, this year went intense. Starting from August, I experience severe insomnia and night terror. I couldn't go to sleep without taking Anxiedin. This fall I moved to a new dorm, and the sound insolation of the dorm is the worst ever. I found myself sitting up every night, experiencing anxiety, hallucinating that someone else is in my room, when there're people talking or walking outside of my door. Other than these anxieties at night, I generally feel emotionless. I stopped laughing with happiness, and was unable to cry even when something real bad happen to me. Suicidal minds are everyday-basis. I even self harm since a month ago just trying to relief myself from the numbness and remind myself that I'm still living in a real world (sometimes when I wake up I'm unsure about this). Can someone help me? I am taking Zoloft 50mg everyday but it's not working anymore.

Maybe you can go for walks. Not necessarily socialize, but just small walks. that helps at times. i've grown a plant in the house and that keeps good pet, but yeah too many can bring insects.

at times i cry n let it out. or listen to music. or exercise.

but yeah the times when i go blank are scary. like dont feel any emotions. i would be like that at office parties, n then avoided going to office get togethers.