I can’t say if it helps w/ negative symptoms since I haven’t had that treatment for that. Anxiety? hell yeah. It works amazingly. And honestly I can’t see why CBT wouldn’t work for negative symptoms. I do some of it for my depression (with helps with the sz) as in when I want to stay home and be left alone I go out and take a walk or join my parents to their shopping. As for attention I don’t know since I didn’t get CBT for that, but what helps me is doing 3 things at once. I take a stress ball or more preferably, silly putty while doing work on the computer like homework, or even better art! While listening to music OR watching a YT video with my favorite people. I switch in between the two as a little reward system, like a bit of chocolate in every page of a book type of thing. Works wonders for me.
But not everyone is fortunate enough to be able to work on computers so then if I need to read/write I will doodle on the side to calm my intense creative swings while playing with putty and reading/writing. If you just need to pay attention, play with some putty and doodle unless you need to keep your eyes on the prof., then pretend he’s an alien and focus on the details of his sentences and what he would look like. Actually that might be distracting but it’s a fun way of staying interested while keeping eye contact.
Sorry this wasn’t much help. I want to give you a heads up before you start CBT (you can do it on your own, but if you want more in-depth or it isn’t working I’d do a CB therapist to help you with it) it’s going to be hard and you won’t want to do it. Basically the motto is: if your illness wants you to do it, do the opposite. You need to start with little steps because it’s hard and it will take a while to get it to work for some people. Who knows, everyone is different. But don’t give up because it’s a fantastic therapy and is amazing if your meds aren’t fixing your problems