You need to have a system; so it's not exactly "remembering" where you put things, but deducing where an items ought to be and going there to find it. It's similar to people who put all files on the desktop vs organizing files into a hierarchy of folders.
A hierarchy of folders is great for hierarchical data like
Accounts>2020>July>july_20.xlsx
For other stuff is a nightmare because it often could be in 2 places. Maybe you have a folder for <bosses_name> and one for HR...now your boss asks you for that hr thing he asked you to do 2 years ago, where is it?
I give my non-hierarchical files filenames with as much meta data as possible, and stick them all in one folder. Search does the rest.
I save my temporary files in my downloads folder. Now and again I delete stuff from a year or so ago.
