I also use meditation. I can't always stop & do it, (Sure the people in Target would understand me laying on the floor finding my "rhythum" & taking very loud deep breathes! While my children are having a "melt down")
If I have to I suck in the deepest breathe I can & count to 10 blowing it out & imagining all the "[censored]" unsettled feeling/negativity going along w/ it! <img src="/images/graemlins/wink.gif" alt="" />