these are things you can do to "wake yourself up", meaning spark your creative juices...
1. take a class in something new
2. crack jokes, especially wordplay
3. keep a notebook
4. visit museums regularly
5. give yourself empty time, nothing to do
6. allow boredom
7. go to a bar you have never been to, in a part of town you never visit, order something you never drink, pull out a piece of paper, look around and write for 45 minutes. (this was the author's favorite tip. it is mine as well.)