I am afraid of being a mediocre! serious problem, please help?

ok, i am 17 years old girl. i want to be a doctor and my school grades are perfect. i play piano and i will learn to play guitar too. i know how to speak fluently english and i am starting italian too. i paint , and i had serious suggestions of selling them. i dance great, i am quite pretty and the *hotty* boy of my school is in love with me. i am composing poems and music and i have been playing in all my school theatric plays first roles. in my future plans is a ''show'' in a gallery for my hobby, photography. I am interested in politics, philosophy abd religion issues. But after all that, i am nothing. i am not a prodigy, not a genious, not famous, not rich. i am a mediocre. i hate that.. any advise?