I can totally relate to your situation as I myself am preparing for the civil services, and every now and then, I suffer from depressional bouts. They take the life out of my day and ruin my tempo in studies. But somehow, I manage to get back up. And living at home is not as pleasant experience as one would expect. Emotional support is something I have never got from people when I was at my worst.
But then, I think that I can help, lend an ear, vent your heart. Maybe that’ll help a little. Do let me know.