Write gibberish if you need to, but WRITE.
Trust and respect the process.
Take tea breaks. Lots of them.
You are not your characters.
There will always be more water in the well, even when your first bucket comes up empty.
Writing in your bathrobe is only acceptable if you're as mighty as Carver.
Wake early; write early.
Sometimes a kettle takes a long time to boil.
Keep going. Through unease, through self-doubt, through crappy writing. Nothing worthwhile is easy.