A lot of reddit posts (or HN posts for that matter) link to quality original content like yours, but never see the front page of any subreddit. And because of duplicate link penalties or prohibition, you can't try again.
That isn't actually true for HN. As long as you're not doing it too much, you can resubmit it until it generates some discussion. But it's important that the goal isn't "to get my stuff onto the front page" but rather "my stuff is inherently interesting, so reaching the front page would be a net positive contribution to the community."
I don't know what Reddit's rules are regarding resubmits, though.