Over the holiday weekend, we were talking with my dad about his army days, and he busted out his Signal Corps ID card. He was an electronics instructor (at age 17) and the back of the card listed the ‘Instructor’s Motto’:

I will always realize that everything
I say and do influences other soldiers.

I will instill in each student a deep
sense of loyalty to his fellow soldiers,
the Army, and our country.

By my own example I will inspire him
to the highest standards of personal con-
duct, integrity, and professional skill.

Seems like a good rule of thumb for any profession.