all in (one's) head

Not substantial or real; having been imagined or invented. I don't know why you think I don't trust you. I can assure you that it's all in your head.

Name	Pronounced	Usage
Starr	STAHR	English
Rubens	-	Portuguese (Brazilian)
AnastÁZie	-	Czech
Panni	PAWN-nee	Hungarian
Emmanouel	-	Biblical Greek
Gwyneth	-	Welsh, English (Modern)