For years, my Mother would say "I don't do well in the mornings." Guess what, she didn't do well in the mornings. Josephine, my wonderful sister-in-law's mother told my Mom one time the answer to her problem was "just don't get up until noon." I thought that was pretty funny, but I promise you, that was not the solution.
I know you know where I'm going with this, so I'll keep it short. Anytime you catch yourself saying something like "I don't remember" or "I don't do well with math" (which is something I seem to say quite a bit), well, I'm human, too, or "it's my altzheimer's kicking in", please, please, please stop right then and there and turn it around and say just the opposite. Keep doing that each and every time and before long you'll see the change, it's pretty amazing how it works. I promise I'll do it, if you will....... Good night for now.
Oh, one more thing, and I know this won't make some people happy, but it also happens when you talk about an illness or a disease or chronic pain, or anything of that nature. Whether it's something in the past or the present, every time you mention it or think about it, even in casual conversation, you're either living up to it or you're bringing it about. More later................