Support your fellow writers – buy their books and read their work. Also, try experimenting with your writing, especially when you need a break from your book. Everything you read and write adds to the creative development process of self-publishing your book.
Friendly FYI…these tips are from a 2016 video series I filmed after self-publishing a children’s book in Australia. Watch this video on TAKU TV at https://www.youtube.com/watch?v=DwnHkM2JOv4. (Tips start at 2:00 in the podcast episodes).