I keep a running list of things that are “lost”. If I can’t find something (and I don’t NEED it now), I add it to my “FIND” list. The list is taped inside my closet, on the wall, so I always know where the list is.
Then I tell myself “it will turn up”, and I stop looking for it.
And, things almost always turn up eventually! In fact, I found my watch last night, when I made my bed… it had fallen on the floor behind the bed.
Crossed it off the list.
This system takes the anxiety out of losing an item, because when it’s on the list, it’s out of my head, and I love the exhilaration of crossing off an item when it’s found!