Well, I had my first lucid dream a few days ago and I posted about it on the experience forums

Anyways, In this dream I did what I had feared the most about lucid dreaming at that time, falling. I did it straight away and I didnt feel real good but Im happy I did it and got it out of the way.

Now I face a new fear, and this is something I really really dont want to try out when I lucid dream but I fear I might call it upon myself even if I dont want it. I hate spiders, I really really dont like them, even the little ones.

I've got a very crazy imagination, a rather childish one even, and I have this image in my head now of this 3m long spider (about as long as a ordinary car). It dosent have any hairs on it, but rather a shell with almost shellarmored leggs and big big fangs.

Ok this is something I dont want to see, touch or even fight when I lucid dream the next time. I actually think I might even have a heartattack or somthing cause its just like touching it in real life.
---

Now for my question, what can I do to prevent this ?

I know some of you close your eyes and wish for things to go away. I dont know if that will work, I will try. But are there more ways to prevent or if they emerge in your dream, get them to go away ?