If you want to accomplish your goals and become successful in life, you have to believe in yourself. Someone said something today that I really took to heart- that no one can encourage you but you. As much as that is true, if you are with someone who does not believe in your dreams because you failed a couple of times, then you are most likely to lose it!
So firstly, you must believe in yourself and see the possibilities of your dreams coming true. You may not know how, but your belief will take you to where your heart has imagined - even if it is beyond the sky.
All successful men and women today are doing well because they believed in themselves ( when no one else did) and were confident about their capabilities. If you believe in yourself, then you can accomplish the goals you have set for yourself.