hands, feet, and mind tied behind my back

i have been trying to attain lucidity for months and i think ive gotten there, but when i realize im dreaming i always end up in a creepy setting that i guess i made up. so naturally the first thing i think of is something scary enough to wake me up and try all over again. how can i stop this!!!!!!! im so close!!!!!!!!!!!
P.S. i need good pointers because i scared myself so bad the other night i havent been able to sleep for almost five days... any tips,pointers, help in general would be great!!!!! i dont want to have antother night mare that is my fault..

1. Have positive thoughts. Think of something nice. If you are scared, or have scary scenarios pop in your head, that's what you will experience. Watch some cool videos of nice places on youtube, read a nice book, anything to fill your mind with something pleasant. Draw a picture of your dream you would like to have. So when you become lucid, you have something nice to think about.

2. There is nothing out there that's after you. It will materialize, only if you think of it. Same way, as when you summon something in LD.

3. If you already have the scary thing there, because you thought of it, think "I love you. I don't want to hurt you". "Look at the cute bunny" while looking at the monster. he will morph into a cute bunny, because that's what you thinking of.

You don't have to scare yourself so you wake up.

If you are spooked, don't WILD.

You have to know, believe, that everything you see in your dream comes from your thoughts.

I always found that the best way to deal with a nightmare through a lucid dream is to become friendly, relaxed, or reassured. Talk to whatever is plaguing you, asking it why it is there. Be firm in your demand to be let go. Outstares your opponents. Know that you are stronger and smarter and in control. Realize that nothing can hurt you in your dreams. If you are unsuccessful achieving that in your lucid dream, then after waking up, replay the dream in your head but change it so that you are in control and it changes for the better, firmly imagine a happy ending that is empowering for you. I now am struggling to become lucid, but I remember twenty years ago when I was a successful lucid dreamer, I actually learned to look forward to nightmares, because they gave me the opportunity to overcome them and empower me.

Like Joanna said just be confident when you get into a lucid remember it is your dream. Instead of being scared going into a lucid dream remember it's your dream and you have the power to over come any creature/monster you come across. You have to be strong and not scared of what lurks in the darkness but instead embrace it and conquer your fear.

If you are struggling with positive thoughts, then turn the creepy situation around. Don't think of it like "AH! I am gonna die!" The best thing would be to think positive of the situation like JoannaB said, but that is sometimes hard to do.
Confidence
What I have always had during nightmares is a supreme confidence in my dreaming self transferred over from reality. I don't think that there are many situations that I would get in in waking life that I couldn't get out of, so when I am in a dream my personality of confidence transfers. Someone jumps at me and tries to eat my face, whether lucid or non lucid I have the way to get out of it. Lucid I would either unsummon them or fire them :P. non lucid I would normally jump back and fight them, being confident in a dream fight is everything.
Dream:
I was at a movie theater and a bunch of people told me that my dad was coming to kill me (don't know why, my dad is one of my best friends). I freaked out and started hiding. The dream started getting more vivid and I was in more control of it, I wasn't lucid, but my confidence part of my consciousness had been transferred from waking. I stopped being scared and started fortifying myself with everything that you can find at a movie theater. I knew that I would be able to defend myself enough that he wouldn't even think about attacking and the dream ended with me going to see a movie.

Always look on the sunny side of life
Stephen Laberge had some examples for this. He said that if you are walking at night time in a dream (either way) and you see a dark figure approaching, then you think "Ah! This guy is gonna mug me!" then he will mug you. But if you see a dark figure walking towards you and you think "Frank?" Then it will be Frank!
Dream:
I had a dream one time that I was trying to use the restroom (non lucid... bad idea :P) and I went to the back of a grocery store. In the toilets and the urinals there was body parts, blood, gore, and all sorts of things you would see in a crazy nightmare. My first thought was "The butcher must be near here." I walk out of the bathroom and the butcher has a new slab of meat right outside and is flushing the excess down the toilet. No longer scary sounding, and I never got scared.

These are two things that you would have to change in waking life, but they are things that people find attractive and are good things to have in your life, so working on getting them wouldn't be a waste of time. Think of someone you know that always looks at the bad side of things or someone you know that is always doubting themselves or worried about what people think about them, not the most fun to be around. Then think about the upbeat, excited, self-confident, not caring what people think about him (her) person that doesn't let anything get them down. Feel free to ask both sides if they have nightmares and tell me. This is what I have found works for me, but I don't know if it is universal.