"So yeah, I'm fine with not being perfect."
Rousey's statement about perfectionism comes as she has yet to return to the UFC Octagon since her shock loss to Holly Holm in Melbourne in November.
"There are a lot of unrealistic standards being put on everyone," Rousey said in a statement about the Reebok campaign, according to the Daily Mail.
"I think it's good to have examples out there who say, 'You know what, not everyone is always going to like you, but life will go on, you'll be OK and you can still love yourself.'
"The acceptance of criticism is part of who I am," Rousey said, according to the Daily Mail.
"People either hate my guts or really, really, like me. And I'm OK with that."