Thanks for reaching out for help with this depression. You are right, you cannot just live with this indefinitely without getting some relief. Please consider talking with a counselor or therapist to help with your emotions. They will not be able to make this feeling go away completely or right away, but they will be able to help you feel less depressed and more hopeful about your future.
As far as your family goes and the way they all treat you, try treating them with nothing but kindness regardless of how they treat you. You will be amazed at their reaction to this. Part of it is because they are being unkind and part is your interpretation of their intent because of the way your depression is affecting your reasoning.
Don't worry about your friends. Once you get some help and get back to the genuine, honest, kind, generous and level headed "you", you will have time to work on friendships. Until then, stay focused on helping yourself get better.
Ask your parents to help you find a professional in your area to help you.