Leadership is the ability to multitask
I don't think this assertion is accurate. It makes it sound like leadership consists only of multitasking.
Taking on a leadership role means being an authority figure, a diplomat, a teacher, a student, a coach and superwoman all at once. --- ah, this is much better! Ha ha, I like it.
Okay, as I read the rest of it, I see that it lacks structure. When I was in high school I did not know what that meant, but now I do. It lacks structure if there is no clear theme. Your theme is that you must know yourself and do a lot of things to be a leader, but that is too obvious. I think you need to say something more distinct. For example, you can say something about a leader needing to play many different roles.
Try this: Rewrite the intro so that it says:
Leadership is the ability to multitask -- in every sense. This includes playing many different rolesd all at once.
Go on to talk about the various roles, and make the superwoman theme all about the ability to be many different people all at once. Give this essay a distinct theme, so that it does not seem like you are writing about every idea that comes to mind. Make it so that this is about one intriguing idea: Being a superwoman means being able to be many people all at once.
:-)