I do this in a blank google doc. I light a candle, set a 1 hour timer, turn on ambient music, lean back in my chair and let my fingers fly. I've been trying this without a topic in mind, just letting my fingers go and writing whatever comes up. It's like a meditation combined with journaling, but without the anxiety of examining what you write as you're writing it. Try to go for a full hour and see what you discover. I suppose a caveat is being good at typing, but I have the hours spent typing on AIM in middle school to thank for that.