Recognize what makes this moment difficult
Acknowledge the event directly without turning it into a lesson, comparison, prediction, or silver lining. For a message about how to tell your manager your workload is too high, use this factual base: use recent examples, observable impact, and the work requirement rather than labels about personality.
Offer support that can be accepted
Offer one specific form of practical or emotional support and make clear that no immediate reply is needed. 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.
Follow their pace rather than yours
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. The recipient decides whether they want conversation, ordinary company, practical help, professional support, or quiet.