Reading the room after you speak.

You do not need a new tool. You need a better ear.

Feedback that lands feels obvious in retrospect. The person who received it can point to what changed.

Notice the response. Silence is data. So is nodding without answering.

Then, and only then, offer the thing you want them to try.

The rest is patience. The person will not act on feedback the day you give it.

Come back a week later. Reference the earlier moment. Say what you saw change.