Having read through about lucid dreaming I now realise I had one 10 years ago (for about 5 seconds). I didn't realise what it was at the time, but it gives me hope that because I have done it once I can do it again.
I was dreaming that I was about to kiss someone. Suddenly my dream slowed down and I heard really slushy violin music playing like in a bad romantic film. I somehow realised I was dreaming, and because it was so bizarre and my dream was so silly I started laughing which woke me up.
It's never happened again - but now I know what it was I would love to do it again.