Self-publishing can be a challenge. To do it successfully, you basically run the business of you. Below are some additional things, aside from the writing, editing, marketing, and conversion, to keep in mind.
Self-Publish Writers Group
Before you write, create an outline. The more you plan, the easier it will be to finish your book, especially during those pesky middle chapters.
When you write, try not to get distracted. Use writing tools such as Write or Die to keep you motivated.
Get beta readers. Ask friends and family to read your manuscript and give you some early feedback, even before you get an editor.
Copyright your work. It costs $35 online, but don’t bother doing it until after you’re published.
Just because it’s published doesn’t mean you’re done. Experiment with pricing, keep your metadata updated, try new covers, etc. Follow up!
Book launches can be a great way to celebrate your accomplishment and get word-of-mouth promotion. GetPublishedTV has a great video that demonstrates how to launch a book successfully.
There are also websites with advice for how to become a bestseller. BestSellerLabs has a list of articles and videos that can help you. Good luck!