A difficult request deserves a clear voice even when the voice is not perfectly steady.

The wish to be composed often delays the asking indefinitely. People wait for the version of themselves that can raise the subject without a shake in the voice, and that version does not reliably turn up, so the request goes unmade for months. Clarity and steadiness are different things, and only one of them is necessary.

Say the difficult sentence this week in whatever voice you have on the day. Write it down first so the words are decided in advance. Let the unsteadiness be visible rather than a reason to postpone.