From Shawn Blanc
Writing down the topic that I’m going to write about tomorrow gives me a few advantages: It gives my subconscious a 12-hour head start. The well of my writing mind gets the whole night to fill itself up with what it wants to say on the topic.
I’ve started doing something along this line by using Akiflow as my Task Inbox. I predominately do this the morning of, but a good upgrade would be moving this to the night before.