Meditation and being aware in your sleep while dreaming I noticed a reply Andrei made on a post on the results of meditating, that you become aware in your sleep while dreaming, so that your mind knows it's a dream:


Mindfulness during sleep
Do Arhats sleep?


This is a major confirmation sign of correct practice in Ancient Daoism (which i've been reading for years now, not knowing which is correct practice) -- and i would like Andrei's advice (and whoever else would like to share their insight) on practice technique and how you have managed to get to this advanced level.
This is Lucid Dreaming and (AFAIK) it isn't typical practice in most schools of Buddhism, nor should it be used as a gauge for how your meditation practice is going.

With that said, there are some connections.


Dream Yoga.  A set of practices in Tibetan Buddhism for using dreaming (including Lucid Dreaming) to further the path.
Using your improved concentration (thanks to meditation) to enter the hypnagonic state intentionally and from there initiate a Lucid Dream.