Has anyone watched Kathy Griffin? It's like watching this principle in action. I have a friend who similarly has very little filter, though her heart is incredibly huge. She still runs into problems with it, but she styled her life as to also include radical acceptance and live at the point where she doesn't regret what she says.

It's fascinating to watch up close. I wouldn't suggest it to the average entrepreneur, however, because your silence and overstating/understating can be a large asset, especially when you have a reputation for being truthful.