Working with the public daily!!!

I work with the public daily and sure wonder how many christians are actually out there some days.  As some days are rough compared to others!  Perhaps I need to pray more for acceptance of others or perhaps I am doing my best...some days I just don't know!  Although despite this, I do always pray for others even the public that can soooo get on my nerves some days.  What do you guys think?  Do you work with the public too?  And how do you deal with it on "bad" days??