How is it more complicated, you think? I tend to oversimplify and assume too much (humbly, I hope), so I'm very much interested to know.

And when I talk about beliefs supporting you I mean really abstract, foundational/philosophical stuff.

Separating those from unhealthy and erroneous ideas can be difficult, but destroying an entire belief system to help you deal with unhealthy beliefs with negative consequences works very much counterproductive.

Just pointing out some flaws in your reasoning is great, but many things are based on assumptions nobody can disprove. Learning that things don't matter is far more important than changing beliefs. I belief I am being watched every time I go outside and when I am using the Internet and I am right. I just don't care (anymore and hopefully never again). Does it matter that you might think you are having a conversation with someone else in your mind. It takes up time and effort that might be better spend, but it is like on this forum: people can block you or just ignore you, as they may ignore you in real life. They may know stuff about you or they don't. It's the not caring that counts, not the believing.

Everything you can't shake and that is harmless is always better than losing all of your beliefs. Beliefs that you are watched, your thoughts are read or you can converse mentally/telepathically, just as examples, are based on deeper convictions you shouldn't want to part with: they keep you together. You can't just change a belief like you do a tyre, so treat them with respect.

Any clinician should do so too. Constantly saying it's just the illness is not helping if you don't believe it to be an illness. I dare to wager that the majority of people on here that say it is an illness don't truly believe it, or they wouldn't be so touchy about it.