You face the biggest challenge of all: to have the courage to seek your big dream regardless of what anyone says. You are the only person alive who can see your big picture and even you can't see it all.
What I learned at a very early age was that I was responsible for my life. And as I became more spiritually conscious, I learned that we all are responsible for ourselves, that you create your own reality by the way you think and therefore act. You cannot blame your parents, your circumstances, because you are NOT your circumstances. You are your possibilities. If you know that, you can do anything.
Difficulties come when you don't pay attention to life's whisper. Life always whispers to you first, but if you ignore the whisper, sooner or later you'll get a scream