I am with AAAAA on this, I was just the same as you (ask hubby lol) cars cutting me up hubby not doing something right, one of the kids being cheeky to me or even someone taking too long working the checkout at the supermarket !
I did the count to 10 method over a period of a year I got it down to 'just think a bit before you let go'.
Now I am a fairly calm person to the point a friend of mine who did not know me before said wow arnt you a paitent person with your kids !
I was so happy with her I could of kissed her lol.
It was not easy but trust me if I can do it anyone can.