Yes you are a very good mother RebelGirl
It's depends on how it may influences your children, for example, if there's was an agrument going on in front of them, and hearing both parents screaming at one another, it can cause the child to more likely respond in a way their parents are responding to each others...Some children intend to follow their parents in a way they think it's the right way to do it.....
Like for myself, I was in a marriage where an abused was happening in the householder, when my oldest son always has to be the one getting in the middle of it, and it effect each of the children in the household, it's a possible that it can influence a child to become one when they grow up, cause of the things they see or hear.... I worry about my children alot, and sometimes I see my oldest son throw a temper once in a while, it does scare me but instead of thinking he may become one, I start to step in, and had a long talk with him, I told him when hes feeling angry about something, always walk away and let yourself cool down because once you let your anger control you, you might do something by hurting yourself or the person around you, I also told him sometimes I get angry at things, I take a deep breath and start over again by handle the situation in more calmer way....It happens sometimes, but sometimes you got to step in as a parents to make sure your children doesn't follow your footsteps by going into the wrong direction....
Sometimes parents makes mistakes and they dont think twice if it may influences their own children, I must admit I do make tons of mistakes, and I look back at them which I could have done better by handling the situations whatever it may be....