Question

سرش توي لاك خودشه

 

Answer 1

keep to oneself

Means to be solitary; to stay away from other people: Ann tends to keep to herself. She doesn't have many friends.

http://idioms.thefreedictionary.com/keep+to+oneself

Answer 2

live in your own world

Answer 3

keep/hold (oneself) aloof => She holds herself aloof

remain/stand aloof => He stands aloof

to be a lone wolf => He's a lone wolf

to be a loner => She's a loner

keep oneself to oneself => He keeps himself to himself