Doing something you're passionate about and making a living out of it is a difficult thing to do. Especially considering the long odds in the music business. But with a focused, business-minded approach to your career, you can optimize your chances for success. In this installment of An Insider's Guide to the Music Biz, Steve Rennie explains how to approach the music business with the mindset of an entrepreneur and look at a career in music as a business.