If you're in student visa in the USA that is the biggest depressing thing in the world. things like taking pictures, lighting candles, eating chocolates or even smelling your fart etc etc will not help you. it's a very very stressful and waste of your time and inner conscience shows you sign of depression to warn you.if you're depressed, then you should be to be in such depression situation. get of the situation, then you will not be depressed.