Dare to dream! If you did not have the capability to make your wildest wishes come true, your mind would not have the capacity to conjure such ideas in the first place. There is no limitation on what you can potentially achieve, except for the limitation you choose to impose on your own imagination. What you believe to be possible will always come to pass - to the extent that you deem it possible. It really is as simple as that.
Decide never to give up on your dream/destiny/vision. Rather, hold on to your God-given dream/destiny/vision and dare to realize/fulfill it outrightly. Knowing/believing that it's never late or too late to discover/realize/fulfill your God-given dream/destiny/vision. Oh! Yes, as long as you are still alive it's never late or too late to do just that, unless you do think otherwise.
Dream is not a revelation. If a dream affords the dreamer some light on himself, it is not the person with closed eyes who makes the discovery but the person with open eyes lucid enough to fit thoughts together. Dream- a scintillating mirage surrounded by shadows- is essentially poetry.
Dreaming/dreaming big is advisable and encouraging too. But mind you, in order to make your dream a reality. You must/have to pull your weight i.e. endeavour to do what you ought to do and when you ought to do it. Because doing just that, will speedily metamorphose your dreams into realities.