Easily Forgotten Bitterly Remembered

Fear, monsters, nightmares, they all originated from the same place. A place where beasts roam free, good dreams cease to be and braveness deem worthless.
Somewhere in the back of everyone's head it lies; an abandoned corner you rarely visit, a corner where you dump the unwanted thoughts in hopes of getting rid of them. But they lie there and wait. Powered up by their negativeness they strike unexpectedly.
You can't escape the inevitable, but you may fight it. Many lost their battles, many lost their hope, many became a prey to their own thoughts; all there, in the dark.