In the book that I am still reading ('Breaking Barriers' by Danny Cox), the author wrote that he was asked by one of his mentors to give a 3-sentence answer to the above question. My 3-sentence answer to this same question would be:-
1) I am a very talented person.
2) I am capable of contributing much to the community in which I live and to the world at large.
3) I am a dreamer with quite a lot of dreams for my life. The fulfillment of some of these dreams will not only benefit myself, but also the people around me, the community in which I live and the world at large.
Dare to Dream