Mike,
I too have two daughters and they are 1 year apart in age. Sometimes after a long day they fight like professional wrestlers with as much noise as a hundred screaming animals. It drives me crazy and I get tired of telling them to stop and that they are family and shouldn't treat each other that way. Most of the time my speeches go in one ear and out the other.

When I am super stressed about it, I go into my room and hang out and watch tv or read a book. Really with a 16 year old, you could leave for a bit and get an ice-cream cone or something to break the stressful feeling.

Kids think they have been given the job of testing the parents ability to control their stress. No changing that ~ so in order to survive, you must just find solutions for how you react. Good luck.

Sisu