The real problem with a music career is that the entire pursuit is not a meritocracy, and is largely based on luck, circumstance, and being in the right place at the right time.
I've seen dozens of guys KILL themselves doing the $30 Blues gigs, the no-money production work, and the low-pay tours and studio jobs for years. They were nice guys, looked the part, and legitimately talented, but their number never came up, and the success lottery didn't pay off. Working your tail off in other industries often pays huge dividends, but not in music. Then, you may be left with no other marketable skills and you'll really be screwed, unless you have a really empathetic breadwinner wife with a stellar benefits package at a legitimate place of employment.
There will always be a surplus of qualified people that could do a particular gig, and there's typically only one spot open. And an already established player will always get the spot. Since musically successful people buddy up and form virtually impenetrable cliques, it's basically impossible to even get a swing at the bat. Established figures in the music business only hire friends that are also established, and they will never take a chance with an unproven player. Even if the newcomer is profoundly talented and experienced, the doors will not swing open while the A-level crew waves them in, unless said candidate is already vetted. This applies to the highest level, down to the local level in major metropolitan areas.
It's possible to work up to A-level, but you have to start in your teens and associate with the right people right out of the gate so you can be at the right place at the right time - which is the most important thing to get a foothold or any sort of traction in this thing. Starting at 33, with no track record and having few, if any, important contacts is simply too late and it's silly to think otherwise. Music, as a possibly available career to those with a little fortune and a lot of work ethic is simply over. It just isn't 1982 anymore.
Depending on luck and hoping for a break is not a wise career plan to make, and that's what this music thing is. It's like telling everybody you're going to be a member of the Lamborghini owner's club, secure in the knowledge that you'll be qualified to join as soon as you win the the Powerball. Is there a chance that could happen? Absolutely. Are the odds in your favor? Probably not, and the same odds of winning the lottery are roughly the same as being able to acheive a relatively substantial income from playing music.
I'm not writing this stuff to be adversarial, and I honestly come in peace. That said, the people that have achieved this are obligated to keep things positive and up because it's sort if a career requirement. No disrespect intended. There are a precious few that tell it like it is out there. However, it is quite pollyanna to not be realistic because a significant number of people will be disappointed and sorry that they pursued this if they are not told.