In Coelho's The Alchemist, what are the obstacles that a young man might face in pursuing his personal legend?

This book suggests that
the three most significant barriers or obstacles that must be overcome by a young man trying to
achieve his personal goals are as follows. Firstly, he has to learn that those who have known
him since childhood and try and persuade him that he will never achieve his dreams or be special
are not telling the truth. Secondly, he needs to conquer the fear of failure that anyone trying
to achieve anything in life must defeat. Finally, he has to understand that the most terrible
thing you can do in life is to ignore or deny the dreams that you have.