Just chiming in to say that yes, this method worked amazingly well for me. After focusing my intent at nighttime (and during WBTB awakenings especially) for only two days, I got a long string of lucid dreams on the second day...felt like I was lucid for hours.

I realized I did something similar to this "intent" method when I was having nightmares as a kid, like adam-s is saying -- I figured out that I could fly away from frightening things, and after deciding that I can and will fly away to escape my nightmares, it became second nature to me. I never worried about forgetting to fly away, or not knowing how to fly, or not realizing I was having a nightmare -- it became an automatic thing to me because I'd decided I would do it and was confident that I could. (And it stuck with me -- I fly constantly in dreams, even to this day, just because I conditioned myself to do it. I just wish I'd thought of using flight as a dreamsign when I was younger, I could have been lucid dreaming multiple times a week by now )