Ya, in some instance, leaders are not created, they are born, It is because, it is very hard to change one's attitude, and passion. It is hard to mold a person.
Instead, it is very easy to train a person who likes that field.
It is hard to teach cricket to one, who doesn't like it. But, it is easy to train one, for whom, it is a passion, desire, aim, and goal, etc...
Therefore, it is clear that, the leaders are not created, they are born.
Hope this will help you.