I mostly just use my head instead of writing things down. I'll write down occasionally, when my head gets too full

But I get crazy with lists until I'm either scheduling bathroom breaks (like I can't be trusted to know when I have to go and just do that?) or making up fun things to put on there (like schedulling coming here) so that I'll have something to pick that I like. But then I start picking what I want to do or not putting things on the list that I won't do and my head just explodes after awhile. Eventually I realize I can just "do" what I know/want to do, I don't have to give myself permission or remind myself or whatever; I can "see" my messes I want to cleanup or books to study, etc. I'm retired so it's not like I have a time management problem