When i fly i think of it as manipulating the energy around me to move me where i want to go i feel the wind and everything pushing against my face when i fly. I notice its easier for me to to things in my dream once I have seen it actually done hence DBZ kind of kiddish but it was the easiest way for me to learn to fly in my dreams. The reason it is the easiest way for me to do it is because by seeing someone else do it i can grasp the concept of how it was done and since it is not possible in real life i can take what i learned and apply it to dreams crazy concept but it works for me.