<p>A couple of things come to mind:</p>
<ol>
<li><p>How do you feel about teaching? Most people I know who have made careers out of music have teaching as one of their major professional activities.</p></li>
<li><p>How do you feel about piecing together a living from multiple professional activities? Except for people who teach music, full-time, in a school, most people in musical careers seem to do a little of this, a little of that, and maybe even some non-musical things to earn enough money to support themselves. This is a comfortable situation for some people but not others.</p></li>
</ol>