The most important qualities that Donald Trump seems to possess are vision and aggression. These are common to people who become very successful in the way that he has. Trump had enough foresight to realize that there was a lot of money to be made buying up dilapidated areas of Manhattan and redeveloping them. Trump also had enough aggression to push his father to expand his company in that direction. His father had been happy enough doing residential housing projects but Trump pushed him to move towards bigger things. These are the main qualities that many successful people, including Donald Trump, have.