"...being an artist is not cheap; the competition is extreme; earning a decent income is brutally difficult.
Of the successful artists I’ve known, I’d say that the two things that led to their success were compulsion (virtually to the extent of mental illness) to do the work, and the eventual ability to monetize the effort. Most of them never get that success—they’re finally ground down and give it up.
Generally, if you’re not compelled to do a particular form of art, you won’t be all that good at it."
A Life in Art
By John Camp (click on the link if you'd like to read the whole article--it brought tears to my eyes.)