I have a bunch of “delusions,” which I don’t think I will abandon for the rest of my life. I have also been taking a bunch of anti-psychotic medications, but the medications can only alleviate a person’s symptoms, they can never alter one’s ideas or thoughts. But that’s okay, so long as I can live a relatively “good,” “normal” life, holding “delusions” is fine and acceptable for me.
For example, I believe in the existence of telepathy, and indeed no one can prove it or disprove it at present, but then what? Does that even matter? Even if psychics exist, they are definitely the minority, and, so long as they don’t hurt me or do damage to me, I can still leave a “normal” life. Think in this way: in Harry Potter, wizardry exists, but it doesn’t have a major impact on the muggles’ world. The wizards are the minority, and the majority of the population don’t have magical powers. The world still functions normally, despite the concurrence between the natural and the supernatural.
I’m not sure about the best way to deal with “delusions,” since different “delusions” are “wrong” in their own ways, and they should be examined individually. There is no generalization. But my way to deal with them is to set aside them for a while, and to concentrate on other things, including daily life and future plan and any goals for the near future or for life. Then I stick to my plan and live my life accordingly. If one certain problem cannot be solved at present, then just set aside the dispute and argument, and maybe we can return to this problem and deal with it at a future date. There’s no rush in it. The definition of having a strong mindset is that you have a lot of big things and big secrets in your mind, but in the meanwhile you can still live happily and fruitfully. I reckon that having this capability is essential if you want to deal with schizophrenia, or achieve anything big in your life.
You said that you can receive messages from crows, so we may also use Game of Thrones as an example. In that universe, wizardry, magic, and dragons all exist, but the people who do not have any magical powers are still the majority. And having magical powers or special aids are not an indicator or criteria for a person’s success, even in that world of abnormality. Stannis Baratheon had Melisandre and the Lord of Light on his side, but did he claim the Iron Throne? The beings of paranormal characteristics, including the Night King, mostly and generally didn’t last for long or became very successful. Bran Stark was “successful” and lived until the end, but it’s not because of his abilities, it’s because he had a benevolent, gentle heart. As we can see, the key to success is not arguing whether some certain “delusions” are true or false, the key to success is to have a good, kind, and gentle heart. Sorry for the spoilers by the way