I'm a qualified architect but I'm going to do a bachelor of music next year and quit architecture forever! Call me financially crazy, but I figured out that music teachers actually earn more than architects per hour.
I suppose that doing music might be a bit less scary for me because I do have another career to fall back on, but I only did architecture to please my parents and found out that all I really wanted to do was music.
So you could always do what I did and train for a career in something else first, just in case, quietly improving on your piano skillz all those years. But looking back, I wish I'd just done music in the first place.
I hate architecture!