My present theory is that dreaming is an active, tho unconscious, deed. So step 1 is to make the unconscious, conscious. And then step 2 is to stop dreaming.
More mundane examples : Turn off the movie. Quit the game. Close the book. Alarm clock goes off.
But that’s just me. I want to hear your opinions on this subject.
One technique to become lucid in dreams is to look at your hands. Hands usually look a bit off - think AI hands. Then you can do whatever you want. In theory if you make it a habit to look at your hands during the day, you’ll do it while dreaming too.