for my fellow psychotics who struggle with thinking someone is in their house, a method I’ve found that really works are these guys:

i put them on my front door and anytime it opens they ring. that way if i think someone has broken in or i see someone who isn’t there i can think back to if the bells have rung, and if they haven’t i can assure myself it’s not real. obviously it’s not fool proof, like if you are prone to auditory hallucinations, but it has really helped me calm down in time to avoid major psychotic breaks. it’s a real lifesaver

nonpsychotics encouraged to rb