Random Lucid Dreams.

Recently while dreaming, I suddenly came to the conclusion that I am dreaming, and therefore I can do whatever I want. But I haven't been doing any reality checks or really had lucid dreaming on my mind at all?

Anyway, shortly after coming to that conclusion, the dream begins to fade. So I spin around or rub my hands and it slowly comes flooding back. But after this, I don't know what to do. There is so much I'd love to do while lucid, but when I actually become lucid I just become lost. Usually all I do is look around and be wowed at how realistic everything is, but I never do what I REALLY wanna do, such as flying or visiting places that don't exist. Because of this, I lose lucidity VERY quickly, and resume my dream as per normal. :(

So I guess my question is how do I stay aware while I am dreaming? It's VERY hard, I have discovered.

Edit: Note that once I discover I am lucid, I don't get super excited or anything, it just fades. Well, I don't feel excited.

What I recommend is that you should go through the stabilization techniques that are in this forum. Another thing, try not to fly in your first lucid dreams, as they will make it very short since you are a beginner, I recommend that you simply walk around and look at things or touch things, smell, taste, get the dream to a very stable state before doing anything.