Want to know the secret to simple lucid dreaming?
It's this; dream recall.
All it takes s to form the habit of recalling your dreams first thing, onto paper or binary. This way you begin to spot the kinds of realities your brain makes for you, you'll see trends in your dreams and are more likely to realize it when you are dreaming.
My trend is to be at my grandmothers house, a big home built by my grandfather that has been the one structure consistent in my childhood memory. If I could remind myself to do a reality test every time I found myself at my Grandmothers house, I would have lucid dreams regularly. That house is often the first thing I remember when I wake up, despite the fact it's been about three years since I was there.
As soon as I can adjust my schedule (With new job), I will start a dream diary again. I've still got my old ones, and enjoy reading them every time I come across them. Plus, keeping a journal of your adventures in other realities is neat.