My dad has stage 3 lung cancer. He is about to start his second round which will be a double dose of what it was before. He is getting very mean and hateful to everyone around him. He is angry that God let this happen to him but nobody ever put a gun to his head and made him smoke all those cigarettes. He has always been very stubborn. He won't let anyone tell him what to do to take care of himself so he is going downhill very fast. Anyone ever deal with someone going through this?