Fear of having schizophrenia

I keep fearing i'm going to see something that's not real. One of my biggest fears is seeing something no one else can see. I know i don't have schizophrenia but there's times where i keep thinking im going to make something up and it's going to be in front of me. I looked it up and it says this is tied to OCD. is there any coping mechanisms i can use to ground myself?