No one can write your story for you.
That's my latest motivation. If not me, then people will never be able to read my masterpieces
I haven't heard of this Gaiman's saying above but yes, I totally relate with it. Writing is a labor. I've lost so many time in the past, when only started writing, waiting for inspiration, when I could just sit and do the job.
To add up the picture, I work full time for two companies (one daily and other is more like occasional orders), I have a kid whom I raise alone, I'm (not having any special training) responsible for my mom's small business SMM bc she's a noob with soc-medias, and not successful enough to afford PRO-marketing, and it's so damn pain to keep track with all the posts, fresh pics and stories ffs
So yeah, I have a schedule like a planner + scheduled alarms in phone, time periods when I need to concentrate on my primary jobs and when I can push them aside and do the writing or twitter binging etc.
With the regard to my writings, I create veeeery slowly... 1 chapter of only 3000 words per MONTH .. when I'm lucky )))
I often feel like "not today", and sometimes I let myself skip that day.
Other times I kind of feel more involved but not yet enough to get back to the draft, then I go to the notes.doc and put theses and fractures of scenes I have in my mind for future chapters; the more I do, the easier it is to start new chapter, and it is very pleasing to see a half of page ready instead of a blank sheet with 0 characters! (primitive psychology that works))
Then I have this state when I'm up for continuing, but... something is still off and all I can do is add 100-200 words to the text and the main thing here - never shame yourself for low productivity! Even if it's a mere sentence - rejoice, you tried and you did a good job, and see how it goes next time - tell this yourself and move on.
Good luck with your novel!