Set aside time to write every day and pick time that you are only focused on your writing.
Write all ideas down in a journal. Even if you think they aren't great ideas, you can turn them into great ideas to a new story. If you experience writer's block, put things aside and take time for yourself to just relax, regroup, and come back to it later.
Write about topics that you love and use your creative mind to make them great. I write my ending to the story before I write the whole book so that in my mind I know where the flow of the story needs to take me. I also choose a title to the book after the story is completed and try to match the title to a summary of what the book is most focused on.
I found that it is important to create your characters and keep notes on each of them so that it stays consistent throughout your book. I noticed I spelled the name differently in the book and did not notice that, and Grammarly is what I used wouldn't pick that up because technically it isn't spelled wrong. Proofread many times before submitting it for final. Happy writing everyone!