(one's) own man/woman/person

Independent in action or thought; not accepting or swayed by outside influences. When I was younger, I would do anything my friends were doing, but I'm my own person now. You won't be able to manipulate her—she's really her own woman. You can't just accept everything you read in the media—you have to be your own man.

(one's) own man

Independent in judgment and action.

(one's) own woman

Independent in judgment or action: She has always been her own woman.