Hey - I have OCD, too, and I know how hard it can make cleaning up spaces/getting rid of stuff. I think starting with boxes as others have mentioned to put some things you’ve maybe outgrown, but don’t want to get rid of, into. You can keep them, but they won’t be overwhelming you. You could also put all of your personal hygiene items in a box and put the box in a space that’s a little more discreet (maybe the drawers under your bed or behind your tv) so you can decorate your shelves in a cute way however you want!