Most people think they’re pretty good singers. This has something to do with the way your voice resonates inside your skull. It’s a lie born in our bone structure. And that’s why when you hear your voice played back from a recording it’s pretty shocking. The truth is most people aren’t good singers. Most people are bad singers. And the same principle applies to our ideas. Things usually sound great inside our heads. So it can be a huge disappointment to see them on the page, out there in the real world. Suddenly they don’t sound so clever or as interesting or as intelligent. Suddenly, they sound dumb. This is a good thing. People become better singers by forcing themselves to sing. And facing your bad ideas is how you make them good ideas. But you have to get them out there first. You have to write them down.
— Why Filmmakers Should Write Often. Maybe Every Day (Musicbed)
Every day in my opinion. but that’s just me.