I am absolutely PETRIFIED of the dark?

I'm not a professional in this subject, just offering some friendly advice. I think the way to conquer a phobia or your fear of the dark is to face it and do it while logically keeping the thought in your mind that no physical harm will come to you. I realize you're having panic or anxiety attacks when you put yourself in those types of situations. You might want to seek a medical professional to help you work through it.