I have no experience with schizophrenia or psychosis, but I have a had few bouts of what I can best describe as rage anxiety. Remember that they are only thoughts. Trying to challenge them can sometimes be beneficial. For instance ask yourself if you’re angry, or are you hurt, by something someone has said or done to you. If you’re angry for no particular reason at that moment, that might be a good thing to remind yourself of. Also what others have said about certain medications or mood stabilizers sound like they could be helpful as well. I hope was helpful in some way or at least supportive.