Hello, Mocha_Almond, and welcome to Psych Central! You have had your share of bad "luck" and more. No wonder you are having problems with depression.

I suggest you seek out a counselor at your school and see what he/she says. Obviously you are very bright. I'm not sure why your grades are not showing it. Is it possible that you might have some sort of issue such as ADD, etc.? My younger son has it.

Of course, your living situations have not helped either. And now family problems.

Please hang in there. I know of students who have been able to take a break from school and come back later. The counselor could check on that.

By the way, contrary to popular opinion, especially among the upper class in India, people don't have to go to a top-notch school to be successful. Graduate school and publications? You are ahead of most folks already!

Again, welcome! I hope your life will be better soon.