Twitter, to me, works if you're funny. Twitter doesn't work as a promotional tool unless you do it very, very, very occasionally.
If you want to be a writer, just write. There's no magic to it.
If you paint, write, do mosaics, knit - if it's solving that part of your brain saying, 'I need to do this,' you've won.
I never wanted to be a director.
So I think if you're happy with your brain, you're powerful.
The biggest waste of brainpower is to want to change something that's not changeable.