[header] How to help paranoid people [title] Avoid arguing with the person. [step] When your friend or family member expresses delusional thoughts, listen to them, but don't argue. The delusion seems completely real to them, so you won't be able to talk them into believing something else. 
[substeps] Arguing can even make the situation worse, since it will make the person feel like no one understands them. [title] Avoid affirming the person's paranoia.