From Drew Barrymore to Robert Downey Jr., there's a long list of people who have faced their troubles, wildly overcome them, and succeeded.
You see Justin Bieber and Robert Pattinson, what they go through, and dude, that's not as exciting as it looks.
Look at the movies of the sixties and seventies. They were making a different kind of movie then. Would 'Network' ever be made now? No. Would 'Kramer vs. Kramer' ever be made now? No. Would 'Tootsie' ever be made now? Probably not. Robert Altman films? Never.