For the next week, you should keep a notebook, sketchbook, or journal by your bed. As soon as you wake up in the morning you should put something in it. Spend at least five minutes writing or sketching your thoughts. The more time you can spend the better.
Do your best to let your inner editor sleep and allow your creativity to flow freely.
Don’t get hung up on working on any specific project. Do what comes to your mind in that particular moment. Clear your mind onto the page if necessary.
Remember not to worry about edits. This is about quantity, not quality. If you get something really good going still continue to let you inner editor chill until you pursue it.
At the end of the week look back and think about how this exercise has helped your creativity. Is it something that you want to continue doing?