More seriously, ADHD, among others, is a working memory disorder. A way to cover this is to use "prosthetics" for it, such as a notepad that you always carry with you. If this affects you strongly, train your muscle memory to use it to note down what you were planning to do and to refer to it when you forgot.
In PC-speak, ADHDers have traded RAM for more CPU.
Individual paper notes won't work. What's been shown to work is a personal notebad you train yourself to carry with you always. For example by now I've trained myself by muscle memory to reach for my phone when getting up. Similar approach can be used for a notepad.
Paper notepad wouldn't work for me due to awful fine motor skills (another ADHD symptom) making my handwriting slow and cumbersome. I can write probably three times as fast on my phone where I just have to tap the letters rather than use dexterity to shape them, thus making it much less of a "stupid hand can't keep up with my brain" kind of frustration thing.
Plus back before smartphones were a thing, I always walked around with so much junk in my pocket that the notepad would take quite some time finding and fishing out, if it would even fit 😂
@Viking_Hippie @db0 I relate to this. I have a big bullet journal that I stopped using because it was too big to haul around all the time. So then I bought some field notes books but most of my shirts don’t have pockets and my jean pockets are filled of my phone, keys, wallet, AirPods plus I don’t want a pen in my pants pocket. On top of all of that my hand writing is atrocious and I too have the issue of my brain moving way faster than my hand.
@Viking_Hippie @db0 I noticed the other day that my mind has what I call “branch thoughts” that sprout as related but separate thoughts to what I’m currently trying to get out of my head. These branch thoughts usually need to be explored individually but if I do that while writing, the original thought is lost. I usually stop writing down the ideas all together because it’s just too much going on at once.