Its the same for almost everything. Music - instant downloads from Itunes. You have a question - immediately look up the answer on our phones of all things. You want a book that came out today? Sure you don't even have to go to the bookstore anymore. Just download it to your IPad. We're all about instant gratification in this age.
Well for those of us without agents and editors (those with them you still know what I'm talking about because you didn't start out with them) or writing groups for that matter, writing is extremely hard because we don't get that instant feedback. We don't have people telling us right away that this chapter is fantastic! or tweak this and it will be a thousand times better. I'm not sure if I can talk for every author out there but I know I feel it - Self Doubt. And insecurity is killer in the writing industry.
The worst enemy to creativity is self-doubt.