I've got pretty good control over this sort of thing.
I go over the feeling to keep something in particular or to make a list of something, but it's flawed reasoning overall to do such. I feel compelled, but logically I know better. It creates a lot of stress, until I finally drop the whole thing and trash everything related to it.
On a game for example. I'm compelled to keep specific items, but I don't want to deal with running out of room. I keep a lot of useless junk on games, since it's easier, so I run out of room quickly, and end up being stressed over having no more room to keep more useless junk.
On a game called "Diablo II", back in the years of 2000-2001 (when I played it most), I had made 12 accounts or so (they're free), each account could have up to about 8 characters, and each character could hold quite a few items (lets just say 20 on average, depending on the size of each item), and each character was full. I also about 2 characters loaded up with "rare jewelry". I kept any piece of "rare jewelry" whether it was good or not, just to keep it.
Collecting items isn't uncommon on games, especially not uncommon on Diablo II, however I kept a lot of what most people would call junk. I felt they had usefulness, a compulsion lead me to keep them even though I knew their being used would be very unlikely.
I really dislike the feeling of needing to "collect" specific things, and because of my inner struggles and the stress related to trying to NOT keep so many things, it makes it easier to trash the stuff and move on. However, I have to go through that process with each item I come across. It sucks.
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Permanently inane.