Well, anon, all I can tell you is that you don’t know if you don’t try. Don’t try to measure up to anyone else but yourself. Some fics you pour everything into get barely a handful of hits, while others you dash off in an hour might get tons. Also, especially with fanfic, if you’ve got people you trust that are into what you’re writing, don’t be afraid to go “hey, I wrote this thing, would you mind taking a look?” Be willing to listen to *constructive* criticism, but don’t let the negative get you down either.
So whomever you are, I hope you do give it a try. It can be very rewarding!
