fight your own battles
fight (one's) own battles
To try to overcome challenges without help from anyone else. Mom, he's not a baby anymore—let him fight his own battles.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
fight your ˈown battlesbe able to win an argument or get what you want without anyone’s help: I wouldn’t get involved — he’s old enough to fight his own battles.
Farlex Partner Idioms Dictionary © Farlex 2017