Some people in life are successful and some fail. There can be many different reasons for this.
What are the main factors of success? Intelligence? Working hard? What exactly is it?
How do you define a success?
For instance, I know people who graduate pretty fast from uni to Master's degree and then they start their postgraduate studies. Those people tend to be hard working, persistent, motivated and passionate.
On the other hand, a person that drops from college might become a tycoon in business and he probably have different characteristics than the academically successful person.