When you write resist the temptation to write until the end of your idea or inspiration for the day, instead leaving some of it unfinished. In this way you have something that will percolate until you sit down again which will provide a natural starting point to continue and thus saving you valuable time to get work written. 

When you edit your book make sure to read it aloud as you do. Not only will you find more typos and issues potential readers may encounter as you force yourself to hear the story with a fresh ear, but you’ll also learn how it will sound when read for audiobooks, helping you make any needed corrections for both listener and reader alike.

Sometimes it’s easier to just use placeholder names if you’re stuck on a certain name for a person, location, or even creature in your writing. Instead of slowing the flow when you’re in the midst of things, putting in a simple name to mark the person/place, etc will suffice. Later you can find and replace the word with the preferred one you’ve chosen. Note, however, it's better to use a name or word that won’t get confused with someone or something else later on. This also helps to make it easier to locate in the find and replace process.

Whenever possible, try and start things off in the midst of the action. Sometimes build up is important to the story and/or character development, but the reader doesn’t always need to see every step leading to the initial action if they aren’t crucial to the story.

For example, following along with a character as they get up, get ready for and then leave the house for work isn’t really needed if the main gist of the scene is meant to focus on their actual arrival in the workplace parking lot. Focusing on the most dynamic parts of the scene will help flow and pacing as well as keep readers hooked.

Sometimes you don’t need all the details to write a scene in your initial draft, allowing you to simply work with a sketch of what you wish to have as the end result instead. A simple layout of the room/area and the basics of who is who and and what is where can allow you to get the high points of the scene nailed down and set up so you can go in to flesh out and smooth things over later. This allows you to focus on the story and energy of the process while the energy is still there rather than having to take time to refine details along the way, which often slows things down in the process.

It’s always a good idea to read outside the genre(s) in which you write. Not only will it help you see and learn more about the craft part of writing but also give you insight into other elements of story you can adopt as needed for your own tales. Reading different genres also will help provide a refresh to your own eyes and mind in looking at and taking on your own work. And its also a good idea to read some non-fiction in the mix with the genre work, which can help not only educate but inform various elements of structure, synthesis and concision of ideas, and other concepts and skills that can prove useful in your efforts.

When introducing a new character it's often a good idea to do so in the midst of their element. That is show the reader what is a core aspect about them from the start by having them in the thick of what they are about and/or do.

So if a character is a paramedic introduce them in the midst of an event where they can showcase their talents. If they are a gladiator have them start things off in the midst of a fight in the colosseum, and so forth. This makes for an easier way to present a character that’s also engaging for the reader as well as provides a compelling scene that will better hook and stay with both reader and character for the rest of the story.

The longer you write and the more you read and take in other forms of media, there can be a temptation or even subtle pull to change or alter your voice in subtle or even not so subtle ways. It’s important to resist such temptations and be mindful of striving to keep your voice your own. While there are always things that can be improved on the mechanical and business side of the coin (grammar usage, plotting, general structure, and so forth) it’s important to not seek to alter what makes your voice your own without some very compelling reason or necessity. Consistency is important to a story and body of work as well as any author’s confidence in what they create.