Shame is such an intense emotion. It just can drive you.
I see writing and acting as different parts of the same continuum. Writing is better for intense emotion. If you're very angry about something, you shouldn't present it as strongly when you're acting. But if you're really angry and writing about it, that's the best way to get it out and across.
My own approach has always been to push intense emotions down and attempt to deal with them later.
