You're never to old. Then again, is all you dream of success and money? If so, can I ask why? Why not do it for love and passion why do it because you want to be walking red carpets, dating models and driving flashy cars? I understand that there's a certain point where your hobby crosses a line and becomes your career therefore you need to make money from it somehow, nothing wrong with making money from it and if you can make money of something you love then great but as long as making the money is secondary and making the music is primary.
Anyway, like I say, you're never to old. I mean if you really are in it for the money just look at the british x-factor, susan boyle has to be about fifty or something. Yet she still managed to break the beatles record.