I try, but am not always successful in avoiding the use of curse words in the break room. Most of them talk like truck drivers---and my boss is the worst offender of all of us! But then, they're all younger and they're used to tossing around the F bomb, while my generation tends to view it as the ultimate Bad Word and saves it for the end of the argument.
However, I have rarely if ever used foul language in front of patients/residents. Their generation was much more formal (AKA well-mannered) and they don't want to hear that stuff, especially from a woman. I think it's disrespectful as well as unprofessional, and with the exception of the time I swore after knocking a full urinal to the floor in the middle of a night shift, I've managed to avoid it.
At home.......well, as my father used to say, "I need to stop that d*mn cussing---it sounds like crap!" Which is why I'm going to try giving it up for Lent. We'll see how well that works for me.