Another tip is that being focused and aware doesn't mean you need to keep snapping an elastic band on your wrist. You need to watch your daydreams (and then hopefully dreams) without interfering and without shutting off. That's different to trying to keep an internal voice in your head to prevent you from drifting off. If you find yourself having to keep jerking yourself awake to avoid falling into a regular dream then you are doing it wrong. You need to watch absent mindedly in a way, and through watching you witness the dream form and you identify when it's a dream.