To Sing or Not To Sing...that is the question

Don't you love it when God throws you a curveball? Today's Ning came at an opportune moment. (Oh yeah, vocab word!) Since high school began I truly thought I knew God's plan for me; I'd be part of an advertising company, something I've dreamed of doing and I'd be very successful. Never mind that music is my entire life, it doesn't have to be part of my career right? Well, for some time I've had this thought of being a high school or middle school choir teacher. I've always thought I'd be a fun teacher, and I love choir and musicals more than just about anything. But I have no idea if I should actually pursue it as a career or if it's just a dumb, passing idea. :/