<p>The good thing is that the professions you listed have entry level classes that can give you a good idea if you can hack the coursework. You may find Accounting 101 a deadly bore, college level calculus just too darn hard or general chemistry unintelligible. That could give you some insight.</p>
<p>The other thing would be to shadow someone in the different fields and see how you like the jobs they are doing.</p>