War of Art
This is one of my favourite books. It has a simple concept at the heart of it. Self Sabotage, aka Resistance.
Whenever you're about to start a new endeavour, whether it is writing, or a business, an art or a craft. There is likely to be something within you that will make you Sabotage your work.
You will find all kinds of excuses to avoid doing the work. There will be external and internal distractions that will pull you away from your focus.
Your job is to overcome this resistance. The way to doing this is by putting a label to it. By examining all of its shapes, forms and colors. Without which you wouldn't even know it exists.
Once you are able to see it clearly and overcome it you are on the path towards Turning Pro. Once you start to gain momentum, the muse comes in your assistance. You now start to have all of your faculties at your command. They turn into a tailwind which allow you to be more creative.