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](https://buddhism.stackexchange.com/a/2855/254) - [Do Arhats sleep?](https://buddhism.stackexchange.com/a/92/254) 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.