There is an imbedded standard of success in your industry that is the established norm. If you are in business, in order to be successful you must drive profits. If you are in athletics, in order to be successful you must win games and championships. If you are in education, in order to be successful your students must achieve high test scores and move on to the next grade.
Whatever the industry, there is a defined and established result that “successful leaders” achieve. Most leaders agree with this standard. It’s assumed if you’re leading in athletics you want to win games. It’s assumed if you’re in business you want to increase profits.