How do you keep your space organized?

It's really complicated for me. I don't actually care about whether my room is tidy or not, but I care about my things getting damaged so I don't want them on the floor. Everytime I try to tidy my room, I reach a certain point and then there are many things I don't know what to do so I give up. Also, if my room is too clean I get really overwhelmed and anxious, but I can't sleep if it's a total mess. What should I do?