Hi,
20 is a bad age to be depressed. You have so much life to look forward to.
INstead of thinking about your own missfortunes, try thinking about how much good you could do with your life; like helping other people, less fortunate than you.
You have intelligence on your side. Your post indicates that you're reasonably well educated and probably of previlidged background.
Tomorrow when you wake up start with the thoughts: what good could I do today? who could I help or make happy to day?