"Be polite and professional, but stand up for yourself when necessary - default to courtesy while avoiding passivity that enables disrespect. Take the high road, yet address harmful behavior directly and politely, saying 'please don't speak to me that way' or 'those remarks were hurtful and unjustified.' Assume good intent initially, but be firm and fair in establishing your boundaries. Give others the opportunity to recognize and adjust their conduct, promoting mutual respect."