Undergraduate / How to start a personal statement about why I'm applying etc? [2]

I need help on how to start here is my essay prompt;

Please include a personal statement of at least 500 words about why you are applying, why you are choosing your Major and Minor courses, and what you feel you can contribute to the program. Feel free to write about your academic and extracurricular interests, and anything else that will help us to get to know you.