Can one have several delusions for years and not know it?

Related question, not "relaxed". I hate autocorrect, and it hates me.

I understand how my question might be confusing, I barely understand this. Perhaps delusions aren't the right word. My problem is that, it would seem, I've realize that I don't actually believe things things about the world that I used to assume. I don't know if that makes any sense to you.

I've had this problem for almost a year now, never been on any meditation. Until now I've been assuming that these were intrusive thoughts of some kind, but now I'm not so sure. The more I think about it, the more it feels like something is missing where there should be core beliefs.

EDIT: So it's not so much believing something ridiculous, but rather suddenly not believing something.

rviit wrote:I have a (somewhat) relaxed question. Namely, is it possible to start believing, or realize that you do, something you really dont want to believe? I.e. to have delusions, while trying to convinced yourself that you dont really believe them.

Yes that's possible.

Delusions about one's gender or orientation, for example, are often like this.

For example, a friend had the delusion that he was 'turning gay', as he called it. He was 28 ,had never had any interest in being intimate with a man, but was now having nearly constant thoughts that he must be 'turning gay'.

He did not want to believe it.

Despite the fact that he blushed red when I sat down next to him, despite the fact that he practically drooled on my hair, and started flirting with me automatically without even thinking about it, that did NOTHING to calm his delusion that he was 'turning gay'.

So that's one example I can think of.

Delusions also tend to creep back into your thoughts. So you might sometimes think you've convinced yourself it's not true, only to have these thoughts come creeping back again.

Many, many thanks Sunnyg & Smithywise for such thorough replies. VERY HELPFUL!