Expectancy bias is real, and it shapes your reality. This means in some sense that what you expect is what you get. When I was a kid, I used to stand on my head so I could see what the world looked like upside-down. To look at the world from that perspective transfigured it.
My otherwise familiar living room would become something new and absolutely fascinating. As far as my visual field was concerned, all the shapes and colours were exactly the same, only inverted.
What bridged the gap between my familiar reality and the alien landscape — where the roof was the floor — was that I made it impossible to keep pretending that I understood what I was looking at. Instead, I just looked at it.