Hey Haithem! Always great to see you around here!

I've actually never tried shaking the feeling of gravity in day dreams, interesting. That is probably a difficult thing to manage because in a day dream, physical reality is there acting upon you and would be very hard to ignore. In dreams, though, the only gravity that matters is what we do or do not allow to influence us.

If I have a little flying glitch, I find that the most effective thing is to just pretend the problem isn't happening. Seriously. I'll think, "Nah, I'm flying just fine..." and things will start heading in the right direction.

Focus all of your thoughts on success. Keep yourself so busy thinking about what IS working that it crowds out doubt. You simply won't have space in your brain to accommodate the fears that might hold you back! The whole dream experience is created by you, and if all you can think about is success, success is the only possible result!

Another fun trick is to point at what you're flying toward to really focus yourself on your goal and destination. Concentrate your mind on that, your goal, and again leave no room for the other things that are distracting you. Don't worry about avoiding thoughts of failure. Just bombard yourself with thoughts of success and it will all happen naturally.

If you find yourself really getting hung up, other wonderful modes of transportation like the "Hulk Jump" are extremely viable too. (This is a super high amplitude jump in the style employed by The Incredible Hulk!)

Good luck! I assure you that you can fly like a bird in your lucid dreams. If you believe that, too, you'll soon get to see it for yourself!