I've had lucid dreams since childhood. I have no limits. I don't understand others who have limits.
In my dreams I'm usually always aware that I'm dreaming and can just have fun with the dream. I can manifest any super power. For instance, last night I was on vacation with my wife on an island (in the dream) and a volcano erupted spreading ash around the island. I decided to fly and using my powers I commanded, with the wave of my hands, for all the ash to be moved back into the mouth of the volcano. I then flew over the mouth and sealed it by sheer will alone. I then decided to re-landscape the island and raised the volcano up into a majestic mountain in the middle of the island. I did this while hovering over the island. I usually fly by simply moving at will as fast or slow as I want and not in a horizontal way like you see Superman fly. Wind pressure has no effect, so I simply move as if I'm standing up. I can fly into space and still breathe and fly into the sea where I can also breathe.
I don't understand others who find it difficult to lucid dream or control their dreams since I've always been able to. I can dream full 'movies' whether I'm in it or not. And, even create trilogies and dream consecutively over three nights and pick up where I left off from the night before.
Maybe, some are trying too hard to lucid dream or control the dream? It simply happens for me without effort.