This is not a lecture about procrastination. We all avoid in different ways, anyhow. I am a non-traditional procrastinator. Being a restless soul, when it comes to writing, I can fill pages easily. I OCD-edly revise; I once worked on fiction while one of my kids was throwing a tantrum not twenty feet away.
In my life, avoidance looks like productivity. I sometimes fill pages to avoid the harder task of examining where a story is going. Sometimes the hardest thing is to Not-Write; to wait, to trust the brain's hidden wisdom.
Whether you're like me or a more garden-variety procrastinator, the cure is the same: Focus on small progress and do what you can. Doing a little bit is better than doing nothing. Today at my Cape Cod writing retreat, my task is to find the single word/phrase that drives the main character through the plot of my novel. (Much as in The Wizard of Oz, Dorothy wants one thing: To go home.) My goal of coming up with a single phrase is "enough" for a days' work. It's more than enough. My whole plot hangs on that, and I'll save myself a whole lotta rewriting once I nail this.
Yeah, it would have made sense to focus on this before writing several drafts of the book. I feel kind of foolish, actually. But if I let that feeling segue into avoidance, it can become a black hole.
There are always valid reasons to procrastinate. But whether the issue is sitting down to write at all or finishing a story, starting with a few steps can lead you home.