How do you trigger lucid dreaming?

REM: Dreaming takes place during rem sleep. You have 5 sleep stages that you progress through. The duration of the rem stage increases as you reach the early morning so that's your best bet of having more lucid dreams. No matter how lucid though, you have to write them down immediately or you will not be able to recall them later. Keep a notepad by your nightstand for this purpose. Good luck!