How Do You Know When to Listen and Not Speak?

How do you know when to just listen and not speak? You get better at, you get better at sensing what's useful through practice. What I'd suggest is try listening without speaking. And then when finally somebody goes, what the hell are you doing? Right. So try, it's like experiment. Try it out. Here's what's wonderful about this. If it all goes horribly wrong, it doesn't actually go that horribly wrong.