Yup. We are each 100% responsible for our actions ALL THE TIME.
I totally know where you are coming from though, Ma. I have a tendency to get angry and rude. It has gotten me in a lot of trouble. I still have to watch out for it constantly; I taught myself that my anger is justifiable when things don't go my way.....
But the truth is I am the one who decides to get angry. It used to be: someone gets in my face, I'd feel perfectly ok to lash out. In fact, I was waiting for the opportunity to let those feelings fly! Now, I saw that doing so leads to a crappy outcome to me and what I want to accomplish and BE; so I get angry less and less. It's on my back and that feels good.
I think you can only change things to the degree that you understand this basic truth. I'm still learning, but life gets a lot better as I accept this. I guess it's growing up.