It certainly was for me the last week when I had been trying to publish my latest children's book on Createspace. I didn't complete the first setup to start with, then there was a problem with the cover, then the interior file, then the cover, then inside again. The cover was sorted out by my illustrator. It was accepted. The interior file (contents) aren't perfect as there are no page numbers and the text isn't the same length on each page (like the others) but I am going to get it sorted out very soon as my illustrator has said she does interior formatting, and I will ask her to help me out to reformat it. Anyway, Tuesday just gone I finally got Susie out the in world. Her story is now on Amazon, available at https://www.amazon.co.uk/Susie-Jiggling-Jumper-Rainbow-School/dp/1720452539/ref=sr_1_1?s=books&ie=UTF8&qid=1528460311&sr=1-1&keywords=susie+and+the+jiggling+jumper.
This story is close to my heart because Susie is based on me when I was at primary school, with Asperger's and heart problems (I still have both).
I hope you will buy it and spread the word about Asperger's and heart problems that go with it.