1: "Never criticize their appearance."
2: "Avoid bringing up past mistakes."
3: "Don't use ultimatums in arguments."
4: "Respect their feelings and opinions."
5: "Avoid comparing them to others."
6: "Don't belittle their accomplishments."
7: "Never use hurtful language or insults."
8: "Avoid blaming them for everything."
9: "Don't dismiss their emotions or concerns."