I think part of the problem lies in that people who have not experienced depression don't understand how the disease affects those of us who are afflicted with it. People really don't understand that it is a disease. They will just think you are in a bad/sad mood and that you should just "snap out of it." Do try to do things that will help you. If you are on medication take it. If you are in therapy make the most of it. Don't feel pressured to make commitments you can't take on. It is not up to you to prove anything to your friends. True friends will come around and be supportive. All you can do is your best. Don't beat yourself up.