If you get lost enough and keep your body still enough for approx 45 mins to an hour to the point where your body feels numb and non existant, are your chances of OBE increased? I hear the more you feel dissociated from your body then the better your chances are to project.
While it's not "the key", it is helpful.
"The key" is to learn to push away all physical reality perceptual, sensory input. That's pretty much it.
If you can do that while remaining awake and aware, you'll naturally slip into another reality.
Provided the numb feeling is an ob sensation and it is not other reasons then you are getting close to ap. When you feel dissociated from your body you are close as well.
Ayup.