The first sentence of a hard conversation does more than begin it. It tells the other person what kind of room they have entered.
When the opening is vague, loaded, or already certain of the other person’s motives, people understandably protect themselves. The conversation becomes a contest over interpretation before it becomes a conversation about the work.
Name the purpose before the problem.
A useful opening gives three things: what you have observed, why it matters, and room for the other person’s perspective. It does not need to resolve the issue before the discussion starts.
The words should sound like you. The structure matters more than the exact phrasing: clarity without accusation, purpose without performance, and a real invitation to respond.
That does not guarantee an easy conversation. It makes it more likely that both people can stay in the conversation long enough to do the work.