There's a funny phenomena that occurs with my writing, or at least with my attempting to write. I have thoughts, ideas, plans all day long, simply running through my head. They take their time, stopping briefly, maybe just slowing down at times, and they allow me to get a good look at them. Sometimes I'm really amazed at the plot twists and character details that arise. That's during the day.
When it comes evening, however, and I sit down at the laptop, or grab a pen and open a trusty notebook, my mind goes absolutely blank! I'm currently working on a method to sneak up on thoughts so I can pen them without them getting suspicious that I might actually be doing something productive.