I usually just have mild paranoia so it's not like I'm convinced people are spying on me etc., but it's still often really difficult to know what to believe. Like if my friends are really my friends, if someone is lying to me or being truthful, if there is something bad in the food I got delivered… Stuff like that. I try to silence the thoughts and not get too affected by them. It helps acting like I'm not suspicious of people and just wait for them to show signs that they aren't out to get me, or just wait for the thoughts to pass. I become less obsessed with the thoughts when I try not to think about the paranoia. I won't eat take-away though… and I don't trust a lot of people. Reality checks with other people helps too. And I also do reality checks to figure out some of the hallucinations.