Hi every novice as well as advanced members!

I have pondered upon a question after listening to Y'Shaarj's sounds from the MMORPG game World of Warcraft which is a demon-like voice that reminded me of nightmares. I've never actually experienced a lucid nightmare (probably because I haven't had that many lucid dreams), but it made me wonder about the experiences some of you have.

How is a lucid nightmare? Are you aware that the things you are seeing is a mere reflection of your deepest subconsious worries, or do you completely lose control of your rational thinking? Have some of you overcome your nightmares, and what happened when you did?

Is it possible to summon a lucid nightmare, in order to face and conquer some of your deepest unconscious fears? I've always believed that such a battle is frightening to face, but also pretty hard to control. I've always had this extreme fear of spiders, and I have actually no idea where from. I used to be able to pick up spiders when I was a child. Is it possible for me, through a lucid nightmare, to overcome this fear?

Answers will be greatly appreciated!