The other night I experienced lucidity in a dream for the first time. The effect was far more subtle than I had anticipated. It started as a dream where I was in this city, and some gigantic mechanical creature was tearing down buildings. I remember thinking to myself about all the people that must have been in those buildings. It was too terrible for me to believe...
...and then suddenly I realized I didn't have to believe it at all. I vaguely realized that nothing around me was real. Any fear I had vanished, and I began to exert control over the world for the first time. What I performed was "steering". Somehow it was like I could guide the plot of my dreamscape. I made the giant creature walk away from the city and avoid buildings. It was pretty awesome.

Unfortunately, being in control of a skyscraper-sized titan raised some red flags in my head. I couldn't make the creature take more than a couple steps before the dream collapsed and I awoke. Still, not bad for my first time.