I've read that success in any venture comes only after about 1,000 hours of practice (Malcolm Gladwell, I think.)Given the part-time nature of my writing efforts, I've done well with a dozen or so published articles and stories but I'm still bummed when my inbox dings with the inevitable rejection letters. I guess that's the trade-off: keep my stories on my computer where they'll be cozy and safe but forever unread, or risk sending them into the big wide world and hope they'll find a home and a readership.
I soften the blow of (repeated) rejection by having a number of projects at once, multiple irons in the fire. Pinterest photos.
That oughta keep me busy while I recover.