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
Gwynfor	-	Welsh
Damion	DAY-mee-ən	English
Onesimos	-	Ancient Greek, Biblical Greek
Gerald	JER-əld (English), GE-rahlt (German)	English, German
Manuele	mah-NWE-le	Italian
Kamakshi	-	Hinduism, Indian, Hindi