quote:
You do not need to believe in order to achieve. People achieve results they do not believe they can all the time, and these people may fail to notice because they fail to believe, yet they achieve all the same.

You argue on the basis that all people have the same dreams. In fact different people have different dreams.
So one result can make one people happy and fulfilled while the same result doesn't make another person fulfilled. What the difference between the two persons?
Their mindset.