Together, these things can really impact a writer's inner sense of wonder. Frequently, these factors do crazy and painful things to me. They make me feel like I'm a terrible writer, that I make wrong decision after wrong decision. Occasionally, they make me feel jealous at the accomplishments of my colleagues, and they make me feel hopeless about my chosen profession. See, no matter how hard I slam my head against the brick wall of publishing, I can never escape these two factors.
Luck is luck.
It's being lucky enough to make the right contacts for your work. Or it's simply having the right story in front of the right editor at the right time. No, not the luck factor, but I can go to conventions and do other things to increase my luck. And then there's subjectivity. Even though I've sent 50 stories to a market, my subjects and writing style just may be polar opposites to the tastes of that editor.