And then, if you can manage to battle your way through and succeed, then you have this tremendous feeling of accomplishment. The romantic notion of writing is that you leap toward your desk and, in a burst of inspiration, you hammer out your tome like Vulcan at his forge. Waiting for this moment is called waiting for the Muse. The idea of a Muse comes from Greek and Roman mythology so this shows you how long the idea has been around. But it ain't the way it works.
Writing is more aligned with the wheat farmers of Iowa.
It's something you have to work at steadily, even daily if you have a big project. Nothing better sets up the mind for writing than doing it regularly, preferably at the same desk at the same time each day. Your mind becomes trained. You know you best. When it comes down to it, you may know what it takes to get you writing.