So. Dang. Frustrated.

This is a segment of an actual e-mail I sent to my dad today with information taken out that could make the specific situation identifiable:

"I am having a big personal problem. I've always thought of myself as a nice person, but lately it's been hard to be nice. SO AND SO is driving me crazy. Everything HE/SHE says I literally want to punch HIM/HER in the face. Everything ends up being about SUCH AND SUCH A THING. I'm at the point where when I hear the word ????? come out of anyone's mouth, I get angry. For some reason, everything that comes out of HIS/HER mouth makes me want to choke a kitten."

Question: Does this make me a mean person? Any thoughts are welcome.