Either it will turn into reality or became just a theory, it won’t matter but if you have a dream be assured that you will have a best life and you will never regret about your life. If your dream is true and this is what your inner self want to become then be assured that without any hard effort you will get it accomplished. See why I’m saying that without any extra effort you can accomplish your dream? Because if your dreams is related to your inner self and not influenced with by society then you will enjoy to work for your dream, you will find a great happiness while working for it and then all extraordinary efforts will seem to you like you are singing your favourite song or playing your favourite game, Hope you got my point.
But Please be careful while making dream ans ask twice to yourself that is this in real you want to become and if your heart says yes go for it and experience a new life. Sooner or later you will start living your dream, your life.
Some wise Man Said- Dream, Dream Big Because Dream comes True.
I would like to add further that Dream big but only dream what YOU want to become not what your society want.