The first time you knock on a patient’s door with a volunteer badge on, your knuckles hesitate. Knock anyway.

That pause in your hand is usually a question about whether you have any business being there. It is not a warning. It is respect for somebody else’s hard day mixed with the ordinary doubt of being new. Nobody arrives at a door already knowing what to say; the knowing starts on the other side of it.

Before the next thing you show up for, decide on one opening line and keep it plain: your name and why you came. When the pause arrives, give it three seconds, then move. Let being a little useful be a low enough bar for now.