It's very important to write things down instantly or you can lose the way you were thinking out a line. I have a rule that if I wake up at 3 in the morning and think of something I write it down. I can't wait until morning - it'll be gone.
It seems that when you have cancer you are a brave battler against the disease but when you have Alzheimer's you are an old fart. That's how people see you. It makes you feel quite alone.