In order to succeed, you must first believe you can. The only thing that stands between you and what you want from life, is the will to do it and the faith to believe that it's possible.
The only true limit to your realization of tomorrow will be your doubts of today. The moment you carry the conviction of belief, in that moment your dream will become reality.
There are no real barriers to your success. You must simply overcome any doubts you have about your ability. If you think you can, you can.