fight your own battles
idiomPart ofbattle
fight your own battles — idiom
1. to deal with your own problems and arguments without asking other people to help
1.idiom
Definition
to deal with your own problems and arguments without asking other people to help or protect you.
Example
Gita's parents told her she was old enough to fight her own battles at school.
Ravi prefers to fight his own battles instead of going to the manager.