Unless you plan on being a full time burger slinger, any career worth dreaming about is gonna be hard to achieve. It's that simple.
Kids who want to be lawyers don't dream about being divorce and drunk driving lawyers. They wanna be the guys that have a real impact. Getting in law school might seem easy, but standing out and making a name for yourself is not that simple. It takes dedication, effort and passion.
You can be a passionless teacher (we've all had those) or you can work hard to be a great teacher. One shows up for work, does what he has to do, and goes home. The other takes the time to do what he does the best he can.
Musicians are the same. You can be a "soulless" musician, go to some weddings and such, and have no fire in your heart. Or you can put everything you can in your passion, and work hard to reach the top. (I'm not saying that wedding musicians are all soulless musicians, some have passion for what they do in any venue, I just needed a contrast.)
So yeah, the music industry is hard to get into, but you don't see my name on any books in the library right now. (Well, except The Firm, but it's only luck that a character bears my name.)