Keeping the Dreams Real

Why do some people dream and dream, and other people get out and actually live their dreams?  Why do some people stop dreaming or limit their dreams? It can come down to your experience with dreams Рif you had dreams when you were young, like 10 years old (and I bet you had a dream then), and someone told you, to get real, forget about your dream Рthen sadly, you may have been hardwired to never dare to dream. Or you might have dreamed and failed, and therefore figured that dreams are for fairytales or for select people