First off you are not a loser. Have you talked to a doctor about being depressed? One thing that might help is writing down all of your accomplishments in a day. Even the silly mundane things like making the bed. At the end of the day look at your list and how much you've accomplished. You also might want to try some positive self talk. I think there are articles on Spark on it. Basically you change the way you talk about yourself and only say positive things.