Hi. I wrote a novel in high school (1984), two in college. Looking back, none was ever publishable. I finished one since, had a respected agent for a few years, got dumped for not producing fast enough. Whatever. Wrote one since then, best one yet - no interest. A few partials. I really got sick of writing books and hitting walls. Now there's a realistic fantasy epic in my head!
In the meantime, I've had about 450 stories, poems and articles published since 1986. My heart is with the shorter works, even though there's not much hope of income there. (It doesn't look like great hope of income with novels either, just more work.) As time goes on, I find I'm more of a poet at the core, darn it all.
I'd say do what interests you, keep at it, and don't let anyone derail you.