The "Morning Pages" concept from "The Artist's Way at Work" http://www.amazon.com/dp/0688166350

Write three pages in longhand first thing in the morning every day. Can be stream of consciousness, a journal, a story, or even "I don't know what to write" over and over.

There are a number of good techniques in the book, but this is the best one to start with.

The book the "Artist's Way at Work" by Mark Bryan, Julia Cameron, and Catherine Allen offers an approach called "morning pages" that is similar to a log but helps to overcome writers block (as well as act as a refinery for written pieces still percolating). Some references:

http://www.artistswayatwork.com/

http://www.amazon.com/dp/0688166350

http://paperartstudio.tripod.com/artistsway/id3.html

although the book encourages you to write them in longhand I found that typing on a laptop in a coffee shop or library or anywhere that was different from where I normally worked (to break association with work space) worked for me.