Hi there, I think you should stop overthinking about life. I think you are anxious. If you are surrounded by negativity you need to be positive enough to change the situation. I have seen most of them who overcome depression. One of my friend was also depressed before exams and he was thinking about his failure. He take the help of professional martine-voyance who helped him in curing this depression and guided him to stay positive in life. I think whatever the situation you need to give your best.