I don't always manage to control my emotions. But I want to be a good role model for my twin daughters.

Or is it the other way around? About two percent to three percent of children suffer from "Disruptive Moodregulation Disorder" It's important to apologize to the children for your own misbehavior towards them and explain it. Children are damaged when their integrity is violated, through punishments, threats, fear-mongering. Parents don't want that. But you can sometimes feel like you're being treated like a household item when people yell at you.