Fog

Sometimes the story is lost or just out of reach.  The best thing that I know to do is keep writing, keep working your way out of it.  If you pay attention when you're lost in a cloud, the sounds are amplified, all of your senses are working to together to help you find your way out.  Don't panic.  Don't give up.  Keep moving forward.  That's the only way I know how to make the fog clear.