How to Deal with your Inner Critic
Invite your inner critic over for lunch, listen very carefully to what she says, then slip a sedative into her wine. When she passes out, lock her in the closet and write. Just write. When you run into troubles, let your inner critic out of the closet, invite her over for lunch, ask her what she thinks, then slip a sedative into her wine.
Repeat these steps until your book is done.