Something I learned from Rush is to try to let people change their own mind.
Listen to the girls at work, when one reveals an area where she is open to a new idea mention it simply, plant a seed, then leave it alone, at some point she will come to the truth on her own.
If you don't already, try listening to Rush Limbaugh and pay attention to how subtle, and patient he is, medicine is easier taken one small dose at time.
I listen to Rush everyday and anyone up on the second floor where my office is...is subjected to it. The usually have to go down to the first floor for some work down there (my Italian born co-worker who adores Hillary Clinton). O'h well.