Try to stay away from the people who are in some sort of depression. All they talk and discuss is so depressing for every one around. May be it is wrong on my part but I try to keep these kind of people at bay.
It depends what you mean. Everyone goes through depression. I don't think it's fair to tell your friends to stay away when they're in that sort of state. I would want my friends there for me. You should never do it to the point that you're sacrificing YOUR well being, but just turning everyone away isn't good either.
Everyone goes through depression at some point in their lives; it is really kind of selfish to tell them to stay away. Especially if these are friends of yours; a better approach would be to try to get their minds of it.
Of course not the friends or loved ones are kept at a bay, but it is those creepy people around who have the habit of throwing their problems on the shoulders of people around.