“Keep your nose clean, and don’t sneeze on the wrong person!”
“It’s easier to mind your own business, and manners in most cases, except when you must take action to help right a wrong being done.”
“Always remember, other people have feelings, and schedules to keep, just like you do.”
“Keep in mind, you are no better than anyone else, but they are also no better than you are. You are each capable of mistakes, and not resisting temptations. Don’t hold grudges over petty things.”
This is actually a Russian proverb, but it fits in well here with what others have written: The church is near but the road is icy. The bar is far but I will walk carefully.