Sorry about how you are feeling. Was a bit depressed when I was quite alone in the UK.
I felt really better when I called home, achieved a little success or just took a break.
Are you at/near home? If not, visit home and some childhood friends.
Visit the hospital and you will see how lucky you are to be healthy,
I believe depression is just a state of mind and you are in control.
Just kow that life is generally not supposed to be serious.
I hope you feel better soon.