My dad was diagnosed with stage 4 brain cancer around 2 years ago. Prior to this, he was a brilliant man, so witty, articulate, kind and larger than life. The guy is my hero and the sort of man I aspire to be more than anything. However, due to treatment his personality has changed. He has become easily irritated and he cannot speak well. His physical appearance has diminished from a ruggid working man to a frail cancer patient. I'm not worried about myself, I'm worried about him. His life is all of a sudden coming to an end when he has so much more to give.