After several attermpts at lucid dreaming using different tecniques, I decided to foucus my attention only on the mindfulness meditation.
I started setting for 20 minutes a day each day for a week.
Furthermore I tryed to use this phrase during the day: "What are you doing here? what was you doing a minute ago?"
Gradually I ended up thinking about the present moment as a connection to my awareness, without having to ask the questions any more...
Last night I fell asleep and after a bit of time I realized I was in a strange situation, because I was in a hospital working as a nurse, that is not my occupation at this time...
So then I realized I was dreaming and started to fly around.
Everything happend in a way so natural that I was stunned by that.