For me, I’ve found that I feel more complete as a writer if I’m continually submitting my work. Whether I get an acceptance or rejection, as soon as I receive a response I send another one out and try to keep some semblance of movement in my submission efforts at all times. [Link]
Robert Lee Brewer, Editor, Writer’s Market, WritersMarket.com
I don’t do that. I don’t submit nearly as must as I feel I ought, or might like to, or as much as might tend to nudge my creative metabolism.
Your thoughts?
Metaphor 
It forces you to come to some level of completion, if only in your own head.
There is a tendency to always be revising, always holding on to your little children. Sometimes, it’s helpful to let them run around and play and maybe fall and hurt themselves, but how much worse would it be if they were couped up in a drawer and could never learn from their mistakes.
So yeah, words are like children in that way, you have to let them go and send them out into the world. And yeah, I think it makes you a better parent.
Submitting work is a difficult process but you do feel like you’ve accomplished something regardless of the outcome.