When criticized, ask: "what specifically in X bothers you?" — forces clarity.

You have the right to change your mind without justification — old promise doesn't bind forever.

If your idea is publicly credited to another, correct the record with three friendly specific sentences immediately.

Instead of "you always...", say "I feel ... when X happens".

Say "no, I can't" — complete sentence. No explanation, no apology.

Instead of "be better", request "reply to my message within 24h".

When unjustly criticized, agree partially vs confront: "true I was late".

In tough confrontation: Describe-Express-Specify-Consequence — four sentences resolve.

Before tough meeting, declare boundary: "I have only 30 minutes".

Describe, Express, Specify, Consequence — a template to disarm any recurring quarrel.

Practice refusing an unethical request clearly and respectfully — before you must in reality.

Don't wait for "he'll grow out of it" — a practical question list turning your vague worry into a specific teacher conversation.