“Some people dream of great accomplishments, while others stay awake and do them.” Anonymous
What this quote means is that you have to do more than just dream about accomplishing something great, you have to take steps to make it happen. Constantly dreaming about something will never get you any closer to your dream. At some point, you have to wake up and go from dreaming about it, to actually doing it.
The world is full of dreamers. Everyone knows people who woke up too late, only to discover that life had passed them by because they never did anything to make their dreams happen. They slept their life away, dreaming one day after another of doing something great, while those who faced reality were busy making their dreams happen.