Shadows turn into monsters, ticktock of the clock becomes a giant's footstepts, every light in the house has to be on!
There's only one way out: You must turn fear into faith, by reminding yourself of what you already know. A "praise prayer" right then--and aloud. Tell God how much you appreciate his awesome power to protect you from all harm. Thank Him for aways being with you(even in the dark). Relax, so that you can think more clearly.
Though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod an thy staff they comfort me. ~ Psalms 23:4 KJV