Name the impact without exaggerating it
Describe who had to wait, worry, redo work, spend money, or make a choice with incomplete information. For a message about how to ask your manager for clearer priorities, use this factual base: use recent examples, observable impact, and the work requirement rather than labels about personality.
Make repair practical
Offer the repair you can actually complete, with ownership, timing, and any limit stated honestly. Ask for a specific change, decision, or working agreement and choose a time to review it. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Let future behavior carry the proof
Do not diagnose, gossip, embarrass a colleague, or turn one incident into a judgment about their character. Move harassment, discrimination, threats, health risk, and retaliation into the appropriate protected process. A promise inside a message is weaker than a visible change in what you do after it.