But what I’m only now starting to fully understand is that this is an inside job. It only works if I believe. I’ve always been confident, positive, doggedly determined; but doubt is beginning to mitigate my conviction. Who am I to think I can accomplish this, when so many have struggled with similar setbacks; some with Parkinson’s, some with the aftermath of spinal surgery? I may be the only one who has taken on this particular two-headed beast…

I have to learn to walk again; to reclaim my mobility, remaster my motion. I consider this fundamental to my therapy —  for me, it all starts and ends with walking. And I understand that it’s more complicated than that. So many tiny disciplines have to be observed, and neglected muscles and ligaments need to be restored. I’m exhausted by the effort I’ve already put in at Johns Hopkins, and daunted by how much work I still have to do. It’s like being nibbled to death by ducks.

Back in the days of carefree ambling, I would have considered the topic of walking to be rather pedestrian. Now the acts of stepping, strolling, hiking, and perambulating have become an obsession. I watch Esmé gliding through the kitchen, grabbing an apple while opening the fridge door for a coconut water, closing it with a quick shift of her hip and pirouetting out the swinging door at the other end of the room. Down in the lobby, my neighbor and her daughter are quickstepping to catch a taxi. I spy on a man walking with a slight limp, which he counterbalances with a bag of groceries. I secretly watch the way they all move. Easy, breezy, catlike, or with a limp, every one of them is far better at it than me. It may be that the most difficult, miraculous thing we do, physically, is to walk…

It’s tough. With PD and the aftermath of the surgery, something as simple as remaining upright is often sabotaged by a rogue army of misfiring neurons. I try to stay organized. I have memorized a litany of admonitions, not unlike my golfer’s list of swing thoughts: Keep my head centered over my hips; hips over my knees; no hyperextending; stay in line with my feet; eyes forward; shoulders back; chest out; lead with the pelvis. All of this kinetic vigilance can dissolve in a nanosecond of panic, or come apart with some other distraction. A tiny nervous jolt or spasm, and like a house of cards in a sudden gust of wind, the only messages that make it through the debris are: Don’t fall. Don’t fall. Don’t fall …

—  Michael J. Fox, No Time Like the Future: An Optimist Considers Mortality (Flatiron Books, November 17, 2020)