There was an Australian tv show called Dance Academy for teens that actually dealt heavily with the theme of "what happens when you work hard and your dreams dont come true." It's set at the Australian Ballet School (spoilers to come) - Tara, the protagonist, has prodigious talent and is expected to become a star, but she suffers a career-ending injury at graduation and never dances professionally. Abigail struggles throughout the show with having a body that does not conform to the ballet aesthetic; Ben does not get into his dream company and settles for a less prestigious one etc etc. Its a really great show and not as depressing as maybe it comes across here!