We take it for granted, but memory is fundamental to everything you do. As soon as you start losing your memory your whole life goes into meltdown. When my mother started having trouble with her memory it was difficult because she was only in her 50s. At the time we just thought she was being eccentric. She had always been funny, always saying the wrong thing at the wrong time and we would think 'I can't believe she said that!' But this was an exaggerated form. She started crying a lot.