What can be the word for "inner protected world"?
I want to use for this title sentence:
A guy in his inner protected world
It's some sort of mental sanctum.
I want to use it in a positive sense. In my local language we call it cossetto, the same as when a worm converts itself into butterfly. In my local language we say that it comes out from its cossetto.
Like I want to use it for a guy who is happy in his own environment , who doesn't worry about the world situated outside .
Please can someone suggest a better word or phrase?