I've had a couple lucid dreams before by just realizing I was dreaming. But none in a while. I read this post and tried it a few nights ago. I woke up early in the morning, stayed up for about an hour, then remembered I wanted to try this and didn't have to be at work unil 1pm. So I went back to bed, layed there and told myself I was going to lucid dream. Then I started imagining what kind of lucid dream I wanted to have. After imagining having a lucid dream I started imagining walking through my house, opening the front door, running down the street...didn't start lding. Then I imagined running through my backyard, jumping the fence and running through the neighborhood, then next thing I knew I was dreaming and in some building and I realized I was dreaming. I flew through the ceiling and in the air and then after a little while it faded. So it was kinda like your experience. I'm sure I just fell asleep after imaging all that then in my dream I realized I was dreaming because I was thinking about dreaming so much.