Some people have been saying that Natural Lucid dreamers are that way because they learned to be lucid dreamers since childhood, perhaps using nightmares or creativity to get to that ability.

But people also say no matter what age you can learn to be lucid dreamers. Sure some of us practice but only get lucky once in a while and mostly nothing.

Could it be then that it depends on what kind of brain a person has? Since we all have brains that are wired in different ways.