be all in (one's/the) mind

To exist solely in one's thoughts, rather than in reality. Don't tell me that my worries are all in my mind—you know this can be a dangerous area. Your presentation sounded great, honestly. Your fears are all in the mind.

Common Names:

Name	Pronounced	Usage
Joleen	jo-LEEN	English
Kinga	KEEN-gah (Polish), KEEN-gaw (Hungarian)	Polish, Hungarian
Alisher	-	Uzbek, Kazakh, Tajik
Ernie	['ɜ:ni]
Bean	[bi:n]
Caelinus	-	Ancient Roman