Can you convince your family members to go into family therapy? If the whole family is depressed, maybe that would help. I can relate in a way, in that I used to live in a negative family (not depressed, but pretty negative), and yet I was blamed for it because I was the "crazy" one. Also, maybe youcould try spending mor etime with friends outsid eof the home, so that you can get positive energy from them. Just my thoughts.