It's like Branson. When I went to Branson there was only 4 acts in there. Now, you can't count 'em. There's so many theatres now, that only the strong will survive.
Publicity gets more than a little tiring. You want it, you need it, you crave it, and you're scared as hell when it stops.
For several days after my first book was published, I carried it about in my pocket and took surreptitious peeps at it to make sure the ink had not faded.