I started doing that last year with Joplin on my computer and it’s a big help.
I also keep big notes to just dump everything I’m working on into - websites, pdfs, screenshots, screen video captures with no commitment to organization except I can add things in chronological order. A lot of it is initiated by showing it to someone else and then realizing I should have a note for myself too.
I really should start doing the same with personal stuff and random observations. If something is important enough to tell (or what to tell) other people about it should be important enough to tell my future self about.
It’s crazy how much not experiencing rewards yourself/the inability to do things for yourself influences things I wouldn’t even imagine before understating what ADHD is/does and consciously examining them.