No matter what you love, there is almost always a way to make money doing it.
Enough to live on? This is patently false.
In some cases maybe not, but you could always supplement your income by doing something related. Or, if you have to, even something you don't like.
At least in that situation you'll be able to look at your crappy part-time job and daydream about the great job that you do the other 50% of the time.
No matter what you love, there is almost always a way to make money doing it.